I need this ASAP

A young scientist wants to focus on drug creation. What is one of the first
things he should do?
O A. Look into trends of various diseases and their effects on society.
B. Research available drugs for treating illnesses such as cancer and
heart disease, as well as the side effects of these drugs.
C. Test a composite material in the lab to see how it can be
improved
D. Make a plan for how to conquer a disease with drugs.