Q. The area marked by internal drainage__:
Answer: Deserts
Notes: Internal drainage is a closed drainage basin that retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but converges instead into lakes or swamps. Such drainage can occur in any climate but are most commonly found in desert locations. For example: Luni River in Rajasthan has an internal drainage system.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 101 in Physical Geography - Important Plains and Deserts in above course in App.