Which of the following are the erosional effects of a glacier found in the mountains?

question 29 options:

a)

pieces of rock are removed through a process called arête.

b)

valley glaciers widen u-shaped stream valleys into v-shaped glacial valleys.

c)

with glaciers on three or more sides of a mountaintop, a steep peak called a horn is formed.

d)

all of the above

the answer is d all of the above

Explanation:

All of the above following are the erosional effects of a glacier found in the mountains.

d)  All of the above

Explanation:

When two adjacent sides of a mountain forming a vertex at the peak are covered with glaciers, the knife-like feature left after the erosional action of the glaciers is known as an arete. This process of glacial erosion is also referred to as arete.

When an already steep mountain is covered by glaciers on most sides, a temporary horn-like natural structure is formed.

i am pretty sure the awsers is d.