Final answer:
During the early years of the food aid policy known as food for peace, approximately 20% of American wheat exports were dedicated to food aid. The correct option is b.
Step-by-step explanation:
In the early years of the food aid policy popularly known as food for peace, the American wheat exports dedicated to food aid were substantial. American farmers shipped one-fifth of their wheat production to India in 1966 and 1967, a time when India was facing severe famine conditions.
Considering the statistics provided, it indicates that food aid was responsible for roughly 20% of the American wheat exports at this time. The correct option is b.