The most appropriate answer would be option A.

Evolution refers to the gradual process by which the genetic composition of the population gets changed over successive generations.

It can be caused by events such as natural selection, genetic drift, mutation, et cetera.

Humans are thought to be evolved from apes and thus, if any new research is able to show any difference or relatedness in the DNA(s) of the two species, then it would directly affect the theories associated with the evolution of humans from apes.