Consider the following research question.

Research Question: Why are pickles stored in salt water?
Which hypothesis is based on this research question?
A. Pickles are green because that is a popular color.
B. It is well-documented that pickles are fun to eat.
C. Pickles are stored in salt water to prevent them from spoiling.
D. A grocery store will sell more pickles when the pickle jars are shelved at eye level than when they are shelved near the floor.