Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same. The only difference between your control and experimental groups is the type of food the tadpoles receive. Which is a good hypothesis for this tadpole experiment?
A. Tadpoles will be larger if the ph is higher.
B. Tadpole size will be unpredictable if fed a meat-based diet.
C. Tadpoles will be larger if fed a meat-based diet.
D. Tadpoles fed a meat-based diet will be bigger , but only in a tank with low numbers.