When a person believes something will cause problems and because of that belief, it does, it is called

The answer is A

If the person is thinking a negative effect will come about, then the answer is A. As nocebo means “to harm” in Latin

Warm up, exercise, cool down

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!