The Best Way to Stay Adequately Hydrated and Prevent Hydration

The best way to stay adequately hydrated and prevent hydration in an active individual is to 

A)  hydrate before, during, and after activity. 
B)  consume a fluid with carbohydrates during activity. 
C)  limit fluid intake in the days prior to activity for maximum absorption. 
D)  drink two cups of fluid every 15 minutes. 
E)  consume fluid with electrolytes.