In which of the following physical environments is an ox-bow lake typically created?

The correct option is Lowland floodplains of winding river courses.

An ox-bow lake is a U-shaped lake or body of water formed when a meander (a wide loop or bend) in a river course is cut off from the main channel of the river. This phenomenon typically occurs in the lower course of a river, specifically across flat lowland floodplains where rivers flow gently and develop broad winding curves.

Step-by-Step Formation Process:

1. Meander Formation: On gentle slopes in lowland areas, rivers erode laterally (side-to-side) along the outer banks of a curve where the water flows fastest, while depositing sediment along the inner banks where water flows slower.

2. Narrowing the Neck: Over time, continuous lateral erosion on the outer bends and deposition on the inner bends bring the two adjacent loops of a meander closer together, narrowing the neck of land between them.

3. Cut-off During Floods: During periods of high discharge or flooding, the river takes the path of least resistance with higher hydraulic energy and cuts straight through the narrow neck of the meander, creating a new, shorter main channel.

4. Isolation and Lake Formation: Heavy deposition of silt and sediment (alluvium) eventually seals off both ends of the abandoned meander loop. The isolated loop remains behind as a stagnant, crescent-shaped body of water known as an ox-bow lake.

Because this process depends entirely on lateral erosion, gentle land gradients, and meandering rivers with high sediment loads, ox-bow lakes are characteristic features of lowland floodplains rather than glaciated valleys, coastal dunes, or high tablelands.