Grey revolution in India is related to which of the following?

Correct option is B

Correct Answer: (b) Fertilizer production
Explanation:
· The Grey Revolution in India is associated with the increase in fertilizer production to boost agricultural productivity.
· Fertilizers play a vital role in improving soil fertility and ensuring higher crop yields. The Grey Revolution helped India enhance its agricultural efficiency and reduce dependence on imports for fertilizers.
Other Options:
· Coal production: The revolution associated with coal is the Black Revolution, not the Grey Revolution.
· Crude oil production: The Brown Revolution is related to non-conventional energy resources, while crude oil has no connection to the Grey Revolution.
· Mustard production: The Yellow Revolution is linked to the production of oilseeds, including mustard.