Multiple choice

Which of the following features is the work of underground water?

  1. A cirque

  2. Acave

  3. A mushroom rock

  4. A cliff

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Caves are formed by the dissolution of limestone by groundwater, making them a feature of underground water action. Cirques are formed by glaciers, mushroom rocks by wind abrasion, and cliffs by various erosion processes - none involve underground water.