Which of the following is the correct explanation of a derived character A. the presence of a backbone is a derived character of mammals because all mammals have a backbone
B. the presence of four limbs is a derived character of snakes because the ancestors of modern snakes had limbs even though modern snakes do not
C. the presence of hair is a derived character of mammals because all mammals have it
D. retractable claws are a derived character of carnivors because some of the animals that are carnivores have retractable claws

i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

the answer is cell division : )