Question

Does anyone know this answer????

Answer 1

D can be eliminated because the temperatures where changed in 3 ways, not two.

A is true, but doesn't apply to the actual experiment "design"

B we don't know for sure, it just looks like a cup/glass.

Best answer for you: C

C is true- it was tested with a single independent variable (one that does not change) on multiple trials (the different temperatures)