The landforms that are influences by several process namely, weathering, erosion, deposition are known as

The correct answer is A. polygenetic landforms.

Polygenetic landforms are landforms that have been shaped by multiple processes, such as weathering, erosion, and deposition. These landforms are often complex and difficult to classify.

Structural landforms are landforms that have been shaped by the underlying geology. These landforms are often simple and easy to classify.

Polycyclic landforms are landforms that have been shaped by multiple cycles of erosion and deposition. These landforms are often complex and difficult to classify.

Here are some examples of polygenetic landforms:

• Mountains: Mountains are formed by the collision of tectonic plates. Over time, mountains are eroded by wind and water, and their sediments are deposited in other areas. This process can repeat itself over millions of years, creating a mountain that is the result of multiple cycles of erosion and deposition.
• River valleys: River valleys are formed by the erosion of rivers. Over time, rivers cut through the land, creating valleys that are often deep and narrow. The shape of a river valley can be affected by the type of rock that it is made of, as well as the amount of water that flows through the river.
• Coastlines: Coastlines are formed by the interaction of the ocean and the land. Over time, the ocean waves and currents erode the land, creating cliffs and beaches. The shape of a coastline can be affected by the type of rock that it is made of, as well as the direction of the waves and currents.

I hope this helps!