The answer would be A because a virus is surrounded in a protein coat
Answer:
Talk to his doctor
Explanation:
he should talked to his doctor because there might be something wrong or he needs to make sure
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What doesn't limit the range of moton from the things which you've mentioned would be age. Age per se doesn't really limit the range of motion - while there are factors which negatively influence our range of motion and which are strongly correlated with age, it is hard to say that age itself would be the cause of a limited range of motion.