Question

the agent of erosion or deposition responsible for the U shaped valley​

Answer 1

$\huge\mathfrak\red{Hey \: Mate}$

✒River flow.

Hope it will help you ❤❤

Answer 2

U-shaped Valley is formed by the glaciers when they move through the main valley. These are usually found in areas with high mountains because it is the place where glaciers are found and where these glaciers can form u-shaped valleys.

These valleys formed by the glacial erosion are also termed as glacial troughs. One of the famous U-shaped valleys in the world includes the Leh Valley situated in India.