The answer is C)
Backflow prévention device
I am not sure i understand the question. but if it you are asking what i think you are the answer could be one o the following.
using protective gear, such as knee pads, helmet, and hang grips. having water bottle, knowing the directions to where you wish to go, and a reflective light on the back.
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Answer:
it makes you anxious
Explanation:
it effects the part of the brain
