Question

what is physics?
a. the study of the human body
b. the study of living things
c. the study of how matter and energy interact
d. the study of matter

Explanation:

Physics focuses on matter, energy, and their interactions. Option A is related to medicine/biology (human body study). Option B is biology (living things). Option D is too narrow (just matter). Physics comprehensively studies matter - energy interactions as in option C.

Answer:

C. The study of how matter and energy interact