The correct answer is: a) Coastal plains.
The Western Ghats and the Eastern Ghats are two mountain ranges that run parallel to each other on either side of the Deccan Plateau in India. The region between the two mountain ranges is a narrow coastal plain that is home to a number of important cities, including Chennai, Madurai, and Coimbatore. The coastal plain is a fertile region that is well-suited for agriculture. It is also a popular tourist destination, thanks to its beautiful beaches and temples.
Option b, plateaus, is incorrect because the region between the Western Ghats and the Eastern Ghats is not a plateau. Plateaus are large, flat areas of land that are higher than the surrounding land. The region between the Western Ghats and the Eastern Ghats is a coastal plain, which is a low-lying area of land that is adjacent to the ocean.
Option c, rolling hills, is incorrect because the region between the Western Ghats and the Eastern Ghats is not a region of rolling hills. Rolling hills are a type of terrain that is characterized by gently sloping hills. The region between the Western Ghats and the Eastern Ghats is a coastal plain, which is a low-lying area of land that is adjacent to the ocean.
Option d, deserts, is incorrect because the region between the Western Ghats and the Eastern Ghats is not a desert. Deserts are dry, arid regions that receive very little rainfall. The region between the Western Ghats and the Eastern Ghats is a coastal plain, which is a low-lying area of land that is adjacent to the ocean.