The correct answer is Palakkad.
Palakkad is a district in the state of Kerala, India. It is known for its extensive paddy cultivation. The district is located in the northern part of Kerala and is bordered by the districts of Malappuram, Thrissur, and Coimbatore in the state of Tamil Nadu. The district has a population of over 3 million people and is the second most populous district in Kerala.
The district is known for its fertile land and its rich agricultural produce. Paddy is the main crop grown in the district and is cultivated in over 100,000 hectares of land. The district is also known for its production of coconut, tapioca, and sugarcane.
The district is also home to a number of industries, including the textile industry, the rubber industry, and the food processing industry. The district is also a major tourist destination, with a number of historical and cultural sites.
The other options are incorrect because they are not known for their extensive paddy cultivation.
- Idukki is a district in the state of Kerala, India. It is known for its tea plantations and its hydroelectric power plants.
- Wayanad is a district in the state of Kerala, India. It is known for its forests and its wildlife sanctuaries.
- Malappuram is a district in the state of Kerala, India. It is known for its Muslim population and its mosques.