Answer:
B. Increasing Vitamin D intake.
Explanation:
There is no reason to be prescribed a vitamin D intake since the individual did not show symptoms of fatigue or low back pain, nor does it mention any type of bone fragility that suggests problems with calcium absorption.
Sports such as soccer, basketball, squash and tennis may also may improve his cardiovascular fitness. He should also try to intensify and work out more frequent if he wants to improve.
I believe the answer is C. Correct me if i'm wrong :)
