Answer:
C. When hydrating before a run, it is important to avoid caffeinated drinks; these kinds of drinks can accelerate dehydration.
Step-by-step explanation:
Obviously, all the given answers are related to the topic of hydration during running. So, to answer the question, we need to carefully examine the question.
We need to choose the answer that deals with intake of RIGHT FLUID.
Answer A. deals with the amount of fluid while answers B. and D. deal with the consequences of deficient fluid intake.
Answer C. is the only one that can help choose the proper fluid, because it states which types of drinks are important to be avoided before a run ( or any hard physical exercise, that is).