Which description is an example of whaling?

Using fraudulent websites that mimic legitimate ones describes pharming or website spoofing, not whaling.

Whaling is defined as a spear-phishing attack that specifically targets high-profile executives such as a CEO, CFO, or other senior leadership. The term originates from the idea of going after the 'big fish' within an organization. Because executives hold authority over finances and sensitive data, they are prime targets for attackers seeking large-scale financial fraud or data theft.

Targeting a specific individual describes spear phishing, which is broader than whaling and does not require the target to be a senior executive.

Targeting a group of individuals describes generic phishing campaigns, not whaling, which is focused on a single high-profile executive.