While speed walking to class, a college student clumsily swings his ankles too close together, so they end up hitting at the medial projections. What specific structure on each ankle is being hit

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water