Answer :
The answer is A because A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation.
Answer:
The correct answer would be option A.
Natural selection refers to the natural phenomenon by which organisms with better adaptions tend to survive and reproduce more in an environment.
Consequently, the frequency of the traits which provide survival advantages tend to increase in a population.
Similarly, the frequency of mutation which help the bacteria to digest organic molecules in the environment will increase in a population as it helps the bacterial population to survive more efficiently.