Choose the correctly matched landform and its formation:

The correct answer is: Meander – Formed by river deposition.

Let us analyze each pair to understand why this is the correct match and why the other options are incorrect:

1. Meander – Formed by river deposition (Correct Match):
A meander is a winding curve or loop in a river system. It is formed primarily through the combined action of river erosion on the outer bank (concave side) and river deposition of sediment along the inner bank (convex side) as the water moves across flat plains.

2. Delta – Formed by glacial erosion (Incorrect):
A delta is formed by river deposition at the mouth of a river where it enters a standing body of water, such as an ocean or lake, not by glacial erosion.

3. Gorge – Created by wind action (Incorrect):
A gorge is a deep, narrow valley with steep rocky walls formed by intense river (fluvial) erosion cutting down into the bedrock over long periods, not by wind action.

4. Dune – Created by tectonic forces (Incorrect):
A sand dune is a mound or ridge of sand created by wind erosion and deposition (aeolian processes), not by tectonic forces.