A Student Carried Out an Experiment in Which He Measured

A student carried out an experiment in which he measured the drinking rate of hopping mice. The experimental animals were of similar size and weight, and housed in individual enclosures provided with the same amounts of food and water. At the end of the experiment, the student found that the hopping mice could be divided into two groups according to whether they had high or low drinking rates. It would be reasonable to predict that, during this experiment, hopping mice with higher drinking rates also

A) produced drier faeces.
B) had experienced more humid conditions.
C) were less active.
D) were provided with a drier food source.
E) were more active.