An organism is born with a genetic variation not present in any of its ancestors. This variation is most likely the result of A. circulation of blood
B. competition among individuals
C. respiration
D. a mutation in its DNA

D

Explanation:

This is because circulation in blood, respiration and competition have no relation to changing the DNA of an organism

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: