The answer would be A because it measures your muscular strength, not muscular endurance.
When you're under stress, your body has an excess of nervous energy. Engaging in physical activities can help release this pent-up energy to make you feel relaxed. So, the answer would be: Something he enjoys, such as biking or swimming.
I am quite sure this is the correct answer.
(Also, Something rigorous, such as running a marathon wouldn't be a good choice as it is exhausting and you want to relax and help yourself).
I Hope This Helped You, Good Luck! =)
The anwer is older people
Answer: when soil becomes contaminated with lead children can begin to show health issues