When each cell specializes in a certain tasks, some cells make fingernails, others become blood cells, brain cells, kidney cells, Etc.
C is the correct answer in school.
B, allergic reactions are what can happen if someone consumes a GMO.
A would cause mutations in insects.
However, D is the technical correct answer as most schools are biased against GMO’s.
Hope this helps!
D) Methanogen is the awnser
It provided the large numbers of troops needed to reinforce the Allied effort.