You are the Health and Safety Officer for an office environment. Several employees have reported experiencing symptoms of eye strain and fatigue due to prolonged computer use. Your task is to minimize the risk of visual discomfort and promote eye health.

Based on the scenario, which control measure would be most effective in reducing eye strain for employees?

a$.$ Encouraging regular breaks and promoting good posture during computer use.

b$.$ Providing noise$-$canceling headphones for employees.

c$.$ Offering healthy food options in the office cafeteria.

d$.$ Implementing a flexible working hours policy.