Answer:
B
Explanation:
The Refraction of light is called the phenomenon by which each of the colors into which it is decomposed, falls at a certain angle.
Answer:
Paper and pulp are made from cellulosic fibers and other plant materials. Some synthetic materials may be used to impart special qualities to the finished product. Paper is made from wood fibers, but rags, flax, cotton linters, and bagasse are also used in some papers.
C is the answer because contact force, is the only force mentioned that opposes the motion of the rock
So picture below to see answer and explanation.