Question

how frequently should flexibility exercises be performed for best results? only before exercising three times a week daily once a week

Explanation:

Flexibility exercises aim to improve range of motion. For best results, performing them daily helps maintain and enhance flexibility, as consistent practice is key. "Only before exercising" is too limited, "three times a week" is less optimal than daily, and "once a week" is insufficient for consistent improvement.

Answer:

C. daily