A fjord is

a. Elongated sea with steep land on three sides

b. A small glacier outside the polar areas

c. A steep mountain surrounding the volcano

d. A steep snow clad mountain range surrounding a lake/sea

ANSWER: Elongated sea with steep land on three sides

Explanation:

A fjord is a deep, narrow and elongated sea or lake drain, with steep land on three sides. The opening toward the sea is called the mouth of the fjord, and is often shallow.

The fjord's inner part is called the sea bottom.