Answer :
A) Gloria should sit a few centimetres away from the screen do that everything is clearly visible.
B) She should keep the monitor at eye level to minimize strain on her neck while looking at the screen for long hours.
Explanation :
Computers were designed for professional purposes but nowadays they are being used for both personal and professional services. Sitting at least 1 meter away from computer screen helps in less eyestrain and helps to prevent eye problems at an early age.
Keeping the monitor at eye level helps in the correct body posture and prevent other body pains related to posture. Always avoid screen glares as it increases the eye strain and may damage the eyes.