As the river enters the plain it twists and turns forming large bends known as ...........

Options

A. crooks
B. flections
C. rounds
D. meanders

Answer

D

Explanation

A meander is a bend in a sinuous watercourse or river that forms when moving water in a stream erodes the outer banks and widens its valley, and the inner part of the river has less energy and deposits silt. Meanders are typical of the middle and lower course of a river when vertical erosion is replaced by lateral erosion, plus decomposition within the floodplains.