On Friday, Christine measures the circumference of an egg and then puts it in a beaker of vinegar. When she comes back on Monday, the egg's shell has dissolved and exposed the egg's semipermeable membrane. Christine measures the circumference of the egg and finds that it is much larger than it was on Friday.

According to Christine's research, the concentration of solute in a normal egg is much higher than the concentration of solute in vinegar. Which process is responsible for increasing the size of the egg?
A.
homeostasis
B.
osmosis
C.
active transport
D.
exocytosis

B. osmosis