There exists much variation of traits within a species population. There are also limited resources that all members of the population have to compete for. Those with traits that make them better adapted to their environment will result in their survival, their ability to reproduce, and to pass on their traits to the next generation. This is an example of

The correct answer is "natural selection".

Explanation:

Natural selection is a process described by Charles Darwin, where individuals with advantageous traits are selected by nature under the premise of "survival of the fittest". The creation of these advantageous traits are the result of one or more spontaneous mutations that bring an adaptation that last in a species because it represent a better chance of survival for them.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."