I believe the answer is: A. Sides and bottom must be leak-proof
Contaminated sharps could penetrate human skins and transfer the contamination directly into the human body, which could be dangerous for the infected's life. In order to prevent this form happening, the sides and bottom of the container must be sealed completely.
The answer is B Avoiding a friend with whom you've recently had an argument, and spending time with friend with whom your're still on friendly terms.
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The adrenal glands excrete(s) excess salts and water.
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Answer: C
Explanation: If she is teaching them how to do something, she would need to instruct them on how to do so.
The correct answer would have to be C age.