The correct answer is c) Malappuram.
Malappuram is the most populous district in Kerala, India. It is located in the northern part of the state and has a population of over 3.7 million people. The district is known for its rich culture and heritage, as well as its beautiful natural scenery.
Thiruvananthapuram is the capital of Kerala and the second most populous district in the state. It is a major tourist destination and is home to many historical and cultural landmarks.
Ernakulam is the third most populous district in Kerala. It is a major commercial and industrial center and is home to the Cochin International Airport.
Kozhikode is the fourth most populous district in Kerala. It is a major port city and is known for its spices and handicrafts.
The following are some of the reasons why Malappuram is the most populous district in Kerala:
- It is located in the northern part of the state, which is more densely populated than the southern part.
- It has a long history and a rich culture, which has attracted people from all over the state.
- It is a major agricultural and industrial center, which has provided employment opportunities for people from all over the state.
- It is a major educational center, which has attracted students from all over the state.