Which of the following are known as coastlines of submergence?

A. Ria coasts

B. Uplifted lowland

C. Emergent upland

D. Concordant coasts

Answer: Option A

Solution(By Examveda Team)

Ria coasts are known as coastlines of submergence. A ria coast is a coastline having several parallel rias separated by prominent ridges, extending a distance inland. The sea level change that caused the submergence of a river valley may be either eustatic (where global sea levels rise), or isostatic(where the local land sinks).