Which fjord that has an estuarine environment at its mouth?

• A. Fjord
• B. Estuary
• C. Fjord Estuary
• D. Depositional Coast

Answer: (C)

The question tests recognizing a coastal feature that combines a glacially formed valley with brackish, river-influenced water at its mouth. A fjord is a deep, narrow inlet carved by a glacier, often with a sills at the mouth that affect water flow. If fresh water from rivers mixes with seawater right where the fjord opens to the sea, creating brackish water and tidal exchange, you have an estuarine environment within that fjord. So a fjord estuary is the term that best describes a fjord with an estuarine mouth.

The other options don’t capture this combination: a fjord alone is just the glacial valley flooded by seawater; an estuary alone is a river–sea environment regardless of underlying landform; a depositional coast refers to sediment-building shoreline processes and not to a fjord with an estuarine mouth.