Answer:
The answer to this question is (a) The test grade
Step-by-step explanation:
A variable is an object, event or idea that is been measure in a particular research. There are basically two types of variable that a research entails.
(1) independent variable (2) dependent variable
An independent variable is variable that stands alone and that doesn't change as a result of other variable. On the other hand, a dependent variable changes as a result of other factors (i.e) it depends on other factors.
In relation to the question above, the dependent variable in Matt's experiment is the test grade because it changes as a result of the reading method selected
Hence the answer is (a) The test grade
