Experimental question: how does watching tv during studying affect a student's test grades? which variable is underlined?

I don't see the underline but i'll give the answer anyway

The Independent Variable: watching tv during studying

the Dependent Variable: affect student's test grades

Independent Variable is the variable being tested and Dependent variable is the effect and responds to the change.

Hope this helped :)

Have a great day

answer; i believe the correct answer is (replication is not conservative);