Question

Which student is exercising at the best intensity?

Melanie can talk while riding her bike, but she can't sing.
Justin feels light headed and dizzy while he runs.
Preston can sing a song while walking his dog.
All of the students are exercising at the best intensity.

Answer 1

Melanie can talk while riding her bike but she can't sing.

Step-by-step explanation:

Answer 2

I think it's this one: Melanie can talk while riding her bike, but she can't sing.