The correct answer is C. Coffee plantations in Karnataka are commonly found in the Western Ghats.
The Western Ghats are a mountain range that runs along the western coast of India. They are a biodiversity hotspot and are home to a variety of plant and animal species. The Western Ghats are also a major coffee-producing region. The climate in the Western Ghats is ideal for coffee cultivation, with cool temperatures and high rainfall. The soil in the Western Ghats is also well-suited for coffee cultivation, as it is rich in nutrients and has good drainage.
The Western Ghats are a major tourist destination, and coffee plantations are a popular attraction. Visitors can tour coffee plantations, learn about the coffee-making process, and sample different types of coffee.
The other options are incorrect. The coastal plains are a flat, low-lying region that runs along the western coast of India. The Deccan Plateau is a large, high plateau that covers most of central and southern India. The Northern plains are a vast, flat region that covers most of northern India.