Scientists studied the thermoregulatory and osmoregulatory responses in exercising human subjects who were experiencing different levels of dehydration (0%, 3%, 5%, and 7% based on body weight). After exercise, the subjects' body temperatures, sweating rates, and blood solute concentrations were measured. Their results are shown in these three graphs. Note that only sweating rate was measured after each bout of exercise. Body temperature was measured after the first two bouts of exercise, and blood solutes after only the first bout of exercise. with 0 percent dehydration, 285 with 3 percent dehydration, 293.5 with 5 percent dehydration, and 304 with 7 percent dehydration.

What is the best explanation for the relationship between body temperature and dehydration?
There is increased convection.
There is increased conduction.
There is reduced evaporation.
There is reduced radiation.