The full form of PFA is

The correct option is Prevention of Food Adulteration.

To understand why this is the correct answer, let us look at the details of this term:
1. PFA stands for the Prevention of Food Adulteration Act, which was enacted by the Parliament of India in 1954.
2. The primary objective of this act is to ensure that the food items sold to consumers are pure, wholesome, and free from any harmful contaminants or adulterants.
3. Under this act, "adulteration" refers to the act of degrading the quality of food by either adding inferior substances or removing valuable ingredients, which can pose significant health risks to the public.