Question

Only 450 hours after the egg was fertilized the cells have now started to _____ and make organs.

A.specialize
B. Work
C.grow
D.mutate

Answer 1

Work? I’m not so sure though it seems to fit

Answer 2

i believe it’s specialize but i could be wrong
by specialize i mean the stem cells are
assigned to do certain things and start making organs in the human body