Answer: Usually age unless its level of fitness but that's kind of vague
Explanation:
So I would say age in moderation because if you have like a 20 year old and a 17 year old doing exercise I don't think there will be a big heat exertion illness getting them down but if your health teachers annoying and is talking about a 18 year old exercising with an 87 year old than its definitely level of fitness
B. because anything can happen to anybody. Whether it be at school, at home, or anywhere else.
Answer:
A guessed of time a person or living object is supposed to live.
Explanation:
Water. is probably a good one
