In which sentence is the subject understood? a. you're not going out without a coat. b. take the clothes to the cleaners. c. it was mixed with blueberries and whipped cream. d. softly walking across the lawn was a black cat.

In "B. Take the clothes to the cleaners" the subject is implied. To explicitly state the subject would mean writing "You take the clothes to the cleaners," which sounds silly.

The answer is

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !