The correct answer is: a) Idukki.
Palakkad is known as the “Rice Bowl of Kerala”. It is the largest district in Kerala and is located in the central part of the state. The district is known for its fertile land and its production of rice.
Ernakulam is the commercial capital of Kerala. It is located on the Arabian Sea coast and is the most populous district in the state. The district is known for its industries, trade, and tourism.
Wayanad is a hilly district located in the northern part of Kerala. It is known for its natural beauty, its wildlife sanctuaries, and its coffee plantations.
Idukki is a hilly district located in the central part of Kerala. It is known for its tea plantations, its dams, and its scenic beauty. The district is also known as the “Vegetable Bowl of Kerala” because of its production of vegetables.