Which practice is essential for ensuring website accessibility?

The correct answer is B. Providing alternative text for images. Providing alternative text (alt text) for images is a foundational accessibility requirement because screen readers rely on it to convey image content to users who are blind or have low vision - without it, those users receive no information about the image. High-resolution…

Web Development Best Practices

Question

Options

AUsing high-resolution images.
BProviding alternative text for images.
CImplementing complex navigation structures.
DUsing a variety of colors and fonts.

How the community answered

(50 responses)

A
4% (2)
B
92% (46)
C
2% (1)
D
2% (1)

Explanation

Providing alternative text (alt text) for images is a foundational accessibility requirement because screen readers rely on it to convey image content to users who are blind or have low vision - without it, those users receive no information about the image. High-resolution images (A) improve visual quality but do nothing for users who cannot see them. Complex navigation structures (C) actually harm accessibility by making sites harder to use for people with cognitive or motor disabilities - simplicity is preferred. A variety of colors and fonts (D) can worsen accessibility by reducing contrast or legibility, particularly for users with color blindness or dyslexia.

Memory tip: Think of alt text as a "verbal caption" - just as a caption describes a photo in a newspaper for context, alt text describes an image for anyone who cannot perceive it visually. If you remember "images need descriptions," you'll always land on B.

Topics

#Accessibility#Alt text#Semantic HTML#WCAG

Community Discussion

Mateus R.Mar 15, 2026

Think about a radio broadcast of a baseball game. The announcer has to describe everything happening on the field because the listeners cannot see it. That is exactly what alternative text does for images on a website, it narrates the visual content for people using screen readers, who are often blind or have low vision. High-resolution images, fancy fonts, and complex navigation do nothing for someone who cannot perceive those visuals in the first place, and in fact complex navigation often makes things harder for users relying on keyboard-only browsing or assistive technology. The answer is B. Providing alternative text for images is the foundational accessibility practice here because it is the mechanism that bridges the gap between visual content and non-visual access. Web accessibility standards like WCAG have required meaningful alt text since their earliest versions, so this is not a niche concern, it is table stakes for any compliant site.

Renata O.Mar 10, 2026

I remember seeing this exact question and almost second-guessing myself because option D sounded reasonable at the time, but then I thought about a screen reader trying to describe a photo with no alt attribute and it clicked immediately. The alt attribute in your img tag is the single most fundamental accessibility requirement in the HTML spec, which is exactly why B is the answer the CIW exam is looking for.

Fatima Z.Mar 12, 2026

Renata nailed it, and here is the sticky hook to lock it in forever: picture a BLIND user with a screen reader hitting an image and hearing absolutely nothing, that silence is the accessibility failure, so think "ALT equals AUDIO LABEL for the vision-impaired" and you will never bubble D again.

Yusuf A.Feb 18, 2026

That one makes sense once you think about screen readers, providing alt text is basically how someone who cannot see the image still understands what it is conveying. Do you know if there are any other attributes or techniques that fall under the same idea of making content readable for assistive technology, like how ARIA labels work?

Naledi M.Mar 19, 2026

When I sat for the 1D0-720 I almost second-guessed myself on this one because option D felt like a trap for anyone who conflates "good design" with accessibility, but the moment I thought about a screen reader user who gets nothing from a decorative banner image with no alt attribute, B locked in immediately. Alternative text is the foundation, full stop, it is literally how assistive technology communicates visual content to users who cannot perceive it, and the CIW material hammers this point repeatedly when covering WCAG guidelines.

Yusuf A.Mar 21, 2026

Solid call on locking in B, though I would add that an empty alt attribute (alt="") on a purely decorative image is actually the correct move over descriptive text, since screen readers will skip it entirely rather than reading out noise to the user.

Fatima Z.Mar 5, 2026

I almost went with D thinking "the more visual variety, the more engaging and accessible for everyone," but then I remembered my ALT-TEXT hook: Accessibility Lets Text Explain X-tra stuff, meaning every image needs a description so screen readers can announce what sighted users see automatically. Option B is the one, no contest.

Yusuf A.Mar 7, 2026

Good call on B, and the mnemonic is clever, though my senior reminded me that purely decorative images should actually get an empty alt attribute so the screen reader skips them entirely rather than announcing something useless like the filename.

Full 1D0-720 Practice