This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
The therapeutic index of a drug is a measure of its 
Select and explain. 
A. Safety, B. Potency, C. Efficacy, D. Dose variability
A: Safety
Answer: A: Safety 
Explanation: Safety is indicated by TI.drug having a TI of more than 1 is considered to be safe when compared to drug having a TI of less trhan one which requies constant plasma monitoring. Ref: KDT 6/e pg 48.