All of the choices from a to c, those are: congestion, cardiovascular disease, respiratory disease may be caused by the continued exposure to the polluted air. When polluted air gets inside our body, the body gets lesser fresher oxygen than the amount it really needs.
Poor ergonomic choice is answer c
Answer:
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Answer: because if you are swimming you most likely want move when you get a cramp so you could dround but a jogger would just fall
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