Question

1. which of the following describes a mature river?

○ a river that forms v-shaped valleys and creates a straight path with small curves
○ a river that moves very slowly and only carries silt and clay
○ a river that is wide and carries sediment such as pebbles and rocks
○ a river that is surrounded by a large flat floodplain

Explanation:

Mature rivers have wide channels, meander, and over time form large, flat floodplains through repeated flooding and sediment deposition. V-shaped valleys are characteristic of young rivers; slow movement with only silt/clay describes old rivers; carrying pebbles/rocks is typical of young, fast-flowing rivers.

Answer:

a river that is surrounded by a large flat floodplain