Biology

The correct answer is: A.It is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Explanation:

Natural selection is the mechanism through which advantageous traits that help organisms survive and reproduce are more likely to be passed on to the next generation. Over time, this leads to a population that is better adapted to its environment.

The other options are incorrect because:

B.It refers to the random mutations that occur within an organism's genetic code: While mutations are a source of genetic variation, natural selection is...