In the united states, it is common to wear black when one is in mourning, while in some locations in india people wear white when they are in mourning. this is an example of: a. chronemics b. chromatics c. proxemics d. haptics

The correct answer is chromatics.

Chromatics means the study of color or complexion. The word chromatics is of Greek origin and is  "khrōmatikos" in Greek. In this instance, discussing the color of clothing people where when they are mourning, and how it differs across cultures, is basically a discussion about chromatics. 

Water(like when there is a hurricane)some foods(not enough for everyone)