How do wetlands form?

a. tributaries flow into rivers.
b. runoff travels down the side of a divide.
c. water builds up in a depression left by an ice sheet.
d. groundwater comes to the surface and floods the land.

Wetlands form when groundwater flows to the floor and the lands are overloaded.

Option d.

Explanation:

While some wetlands may develop relatively fast, many more have required decades for their creation. Some of the processes that shape or change wetlands are here:

Coastal lowland flooding - Widespread marshlands protected against wave action on barrier islands have been created from rising sea levels Flood-lands of the river - Develop by erosion and deposition of sediments during floods on adjacent lands. Certain earth forces: Earthquakes can cause air temperature by polluting rivers or land to sink near the shoreline or water table.

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