Ao on the surface of the skin causes body odor

Apocrine glands develop in areas abundant in hair follicles, such as your armpits and groin, and they empty into the hair follicle just before it opens onto the skin surface. When your body temperature rises, your eccrine glands secrete fluid onto the surface of your skin, where it cools your body as it evaporates.

Explanation:

answer: when you start thinking negitivly and start having suicidal thoughts

or harming yourself, sadness is part of depression as well as fear and anger combined

the answer would be  

c. neighborhood watch

hope this .