This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Fraction of drug that reaches in the blood is ? 
Select and explain. 
A. T1/2, B. Absorption, C. Bioavailability, D. Elimination
C: Bioavailability
Answer: C: Bioavailability 
Explanation: Ans. is 'c' i.e., Bioavailability "Bioavailability is a measure of fraction (F) of administered dose of a drug that reaches the systemic circulation".