The Mappila Rebellion of 1921 was primarily a:

Peasant uprising
Communal conflict
Resistance to British rule
Labor movement

The correct answer is: B) Communal conflict.

The Mappila Rebellion of 1921 was a major uprising by the Mappila Muslims of Malabar, British India (now Kerala, India). The rebellion was primarily a communal conflict between the Mappila Muslims and the Hindu Nairs. The rebellion was triggered by a number of factors, including the economic and social oppression of the Mappila Muslims, the religious conversion of Mappila Muslims to Christianity, and the British government’s policies of divide and rule. The rebellion was brutally suppressed by the British, and resulted in the deaths of thousands of Mappila Muslims.

A peasant uprising is a rebellion by peasants against their landlords or the government. Peasant uprisings are often caused by economic hardship, such as high taxes or low wages. They can also be caused by social or political oppression, such as the denial of basic rights or the forced conversion of peasants to a new religion.

A labor movement is a social movement that aims to improve the working conditions and wages of workers. Labor movements often use strikes, boycotts, and other forms of protest to achieve their goals.

A resistance movement is a group of people who oppose the authority of a government or other power. Resistance movements often use violence and other forms of non-violent resistance to achieve their goals.