Answer: B. "The effect of a drug in the treatment of disease." is the correct answer.
Explanation:
In the PF study unit " Introduction To Pharmacology" under the subject of Pathology and Pharmacology, you will find on pages 2 and 7 the answer provided above to be the most accurate. On page 7, it goes into more details about pharmacotherapeutics. I hope this information was helpful. Happy Studying! ^.^