Correct Option: D

Geologically, a fjord is a long, narrow inlet with steep sides or cliffs, created in a valley carved by glacial activity. A fjord is formed when a glacier cuts a U-shaped valley by ice segregation and abrasion of the surrounding bedrock. Glacial melting is accompanied by rebound of Earth's crust as the ice load and eroded sediment is removed. Both the whole coast of Norway and the island of Greenland have many fjords.