Question

Which statement best describes the process that formed these features?


Glaciers formed the U-shaped valleys when the sea level was much higher.


Ocean waves eroded long channels into the coast when the sea level was higher, and then glaciers moved down the channels to form a U-shaped valley.


Glaciers formed the U-shaped valleys, and seawater flooded the valleys when the sea level rose.


Glaciers formed the U-shaped valleys, and the ocean melted the glaciers when the sea level was lower.

Answer 1

"Glaciers formed the U-shaped valleys, and seawater flooded the valleys when the sea level rose."

Reason: Glaciers carve U-shaped valleys; after glaciation sea level rose (or land subsided) and ocean water inundated those valleys, producing fjords. The other options describe incorrect timing or mechanisms.