The correct answer is C) Malnad.
Malnad is a region in the Western Ghats of Karnataka, India. It is a hilly region with a cool climate, which is ideal for the cultivation of grapes. The Malnad region is home to several vineyards, which produce a variety of wines.
The other options are incorrect. Northern Karnataka is a dry region with a hot climate, which is not ideal for the cultivation of grapes. Coastal Karnataka is a coastal region with a humid climate, which is also not ideal for the cultivation of grapes. Southern dry zone is a region in the southern part of Karnataka, which is a dry region with a hot climate.
The cultivation of grapes and wine production is concentrated in the Malnad region of Karnataka. The Malnad region is a hilly region with a cool climate, which is ideal for the cultivation of grapes. The Malnad region is home to several vineyards, which produce a variety of wines.