In debate class, Nguyan argues that children should watch less television. He says that if children spent more time playing games outside than watching television, they would learn more. Kathleen responds that research shows that students who watch more television actually have higher test scores.

What technique does this demonstrate?

A. rephrasing the original claim using new words
B. adding additional reasons for the original claim
C. providing a new claim that opposes the original claim
D. presenting evidence that contradicts the original claim