Answer: C. If different types of leaves are exposed to low temperatures, then they will change colors.
Step-by-step explanation:
A hypothesis is statement which is based upon prediction or assumption for determining the cause of a natural event or process. This is supported by the least amounts of evidences which are to be proven using scientific methodology.
C is the correct option this is because of the fact that it involves assumption that is leaves in low temperature will change colors. This can be proved by experimental procedures.