The variety P,Q,R and S Outlive the others because the?

In explaining the term camouflage, to a class, the diagram above shows four varieties, P, Q, R, and S of the same species of fish living amongst water plants in a river were used

A. variety is the most beautiful
B. variety does not have markings
C. markings of the variety are similar to those of the environment
D. predator does not like eating the variety

Correct Answer: Option C

C. markings of the variety are similar to those of the environment