Can you please help me place the correct mechanism of evolut

Can you please help me place the correct mechanism of evolution with the following?:

A) A mechanism of evolution that can lead to outbreeding depression. It is of particular importance in situations where individuals from one population move into the range of another.

B)Two of the more common mechanisms that can lower the average fitness of a population.

C)This mechanism increases the average fitness of a population.

D) This mechanism can lead to inbreeding depression.

E) These three mechanisms are believed to be responsible for most of the evolutionary change that has occurred since life first appeared on this planet.

F)The mechanism of evolution that is the ultimate source of all biological variation?

G)This mechanism is believed to be most responsible for the diversification of life.

H) This mechanism, which leads to neutral evolution, is the reason why we can use DNA in phylogenetic analysis. In fact, if we view evolution from the perspective of DNA, an argument can be made that this is the most important mechanism of evolution.

Solution

C the mechanism increases the average fitness of a population

Cause according to the Natural selection, nature allows the the fittest individual of a species to survive. The species which cannot adapt to the environment dies out.