Discuss the conditions needed to cause water to diffuse into a cell

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?

Ruby is conducting an investigation. an advantage of her design is that she can use a large range of variables, with that she can not be sure that one variable is the cause of another. what kind of investigation is ruby most likely conducting?