The Green Revolution in India refers to the successful implementation of agricultural practices and technologies in the mid-20th century, which led to a significant increase in food production. Among the options provided, the Green Revolution has been most successful in the case of wheat.

During the Green Revolution, India witnessed a rapid increase in wheat production due to the introduction of high-yielding varieties, improved irrigation systems, and the use of fertilizers and pesticides. This resulted in a substantial increase in wheat yields and overall food availability in the country.

While the Green Revolution brought positive changes to other crops as well, such as rice and coarse grains, wheat stands out as the most successful in terms of increased productivity and impact on food security.