Tamil Nadu experiences occasional cyclones, primarily affecting:

The correct answer is: b) The southern coastal regions.

Tamil Nadu experiences occasional cyclones, primarily affecting the southern coastal regions. The state is located in the Bay of Bengal, which is a cyclone-prone region. The southern coastal regions of Tamil Nadu are more vulnerable to cyclones than the northern coastal regions because they are closer to the Bay of Bengal. The cyclones that hit Tamil Nadu typically originate in the Bay of Bengal and then move towards the state. The cyclones can cause heavy rains, strong winds, and flooding. They can also cause damage to infrastructure and crops.

The western ghats are a mountain range that runs along the western coast of India. The western ghats are not as vulnerable to cyclones as the coastal regions because they are located further inland. The interior plains of Tamil Nadu are also not as vulnerable to cyclones because they are located further away from the coast.

Here are some additional details about each option:

• Option a) The northern coastal regions: The northern coastal regions of Tamil Nadu are less vulnerable to cyclones than the southern coastal regions because they are further away from the Bay of Bengal.
• Option b) The southern coastal regions: The southern coastal regions of Tamil Nadu are more vulnerable to cyclones than the northern coastal regions because they are closer to the Bay of Bengal.
• Option c) The western ghats: The western ghats are a mountain range that runs along the western coast of India. The western ghats are not as vulnerable to cyclones as the coastal regions because they are located further inland.
• Option d) The interior plains: The interior plains of Tamil Nadu are also not as vulnerable to cyclones because they are located further away from the coast.