Carl wants to know which sports drink is most effective at replenishing electrolytes during intense physical activity. He decides to test 4 different brands of sports drinks: Gatorade, Vitamin Water, PowerAde, and Propel Water. He tests the different sports drinks on the varsity boys swim team at his school. In his experimental group there are 5 different 17-year-old boys. They are all practicing for the 100-meter freestyle race. Each boy tests each of the different brands of sports drinks, and Carl measures their electrolyte concentration in their blood.

Independent Variable: The Electrolyte Drink

Dependent Variable: Concentration of electrolytes in their blood

Control Var 1: Measuring the concentration of electrolytes before drinking

Control Var 2: Using the same amount of drink for each player.

Control Var 3: Making sure they don't drink any extra water to dilute the concentration

I predict that of all the drinks, Gatorade will rank first, Powerade second, Propel third and vitamin water last.

c

explanation:

idk

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.