Final answer:
b. Pharmacology. Pharmacology is the study of drugs and their actions. It examines how drugs interact with the body, their therapeutic effects, and potential side effects or interactions.
Step-by-step explanation:
Pharmacology is the study of drugs and their actions. It focuses on how drugs interact with the body, including their absorption, distribution, metabolism, and elimination. Pharmacologists investigate the therapeutic effects of drugs, as well as their potential side effects and interactions with other drugs.