When applying ergonomics to a workstation area, which of the following are the MOST important to consider? (Select TWO).

Proper sitting position, including back support, feet flat on the floor, and elbows at a comfortable angle, is fundamental to ergonomic health, preventing strain on the back, neck, and shoulders.

The amount of time a computer will be used is a factor for scheduling breaks, but not a physical setup element of ergonomics.

Clarity of the display is important for usability, but not as directly related to musculoskeletal ergonomics as seating and input device positioning.

Proper keyboard and mouse height ensures that wrists are kept straight and shoulders are relaxed, minimizing the risk of repetitive strain injuries like carpal tunnel syndrome and promoting comfortable input.

The number of speakers in a sound system is irrelevant to workstation ergonomics.

Brightness and contrast of the display are important for eye comfort and reducing eye strain, but usually considered secondary to core musculoskeletal positioning in ergonomics.