Acomprehension test was given to students after they have studied textbook material either in silence or with the television turned on.

which is the independent variable and which is the dependent variable?

When we say independent variable, this is the variable that stands alone and is not changed by other variables. This is the variable that is being manipulated. On the other hand, a dependent variable is the variable that is being affected in the experiment or survey. So based on the given scenario above, the independent variable is the studying of the textbook material either in silence or television turned on, and the dependent variable is the result of the comprehension test. Hope this answer helps.

Cis correct i think