Question

select the correct answer. which statement is true regarding flexibility? a. a joint’s range of motion cannot be maintained with age. b. a joint’s range of motion will be lost if the joint is not used regularly. c. flexibility decreases with age because muscle strength increases. d. flexibility decreases at a rate predetermined at birth.

Explanation:

• Option A: Regular stretching and exercise can help maintain a joint's range of motion with age, so this is false.
• Option B: If a joint is not used regularly, the muscles and connective tissues around it can become stiff, leading to a loss of the joint's range of motion. This is consistent with the principles of flexibility and joint health.
• Option C: Flexibility decreases with age due to factors like reduced elasticity of connective tissues, not because muscle strength increases (and muscle strength can actually decrease with age if not maintained). So this is false.
• Option D: Flexibility decline with age is influenced by lifestyle factors (like exercise, activity level) and not a rate predetermined at birth. So this is false.

Answer:

B. A joint’s range of motion will be lost if the joint is not used regularly.