Question

highlight the independent variable.
a pet store owner wants to see what will happen if they feed tanks of goldfish different amounts of food. one tank of goldfish is fed the normal amount which is once a day, a second tank is fed twice a day, and a third tank is fed four times a day during a six - week study. the fishes body fat is recorded daily.

Explanation:

In this experiment, the independent variable is the factor that is manipulated. Here, the pet store owner is changing the number of times the goldfish tanks are fed per day (once, twice, four times, and the normal amount which is once a day? Wait, actually, the feeding frequency: one tank once a day, second twice, third four times. Wait, the normal amount is once a day, then the manipulated variable is the feeding frequency (number of times fed per day). So the independent variable is the number of times the goldfish are fed per day (or "feeding frequency").

Answer:

The independent variable is the number of times the goldfish are fed per day (feeding frequency: once a day, twice a day, four times a day).