has a higher specific heat than the metal cup is a better conductor of heat than the metal cup has a specific heat that is similar to that of the metal cup
I gave my students this multiple choice question: Two students make hot chocolate. One student pours the hot chocolate into a foam cup. The other student pours the hot chocolate into a metal cup. The metal cup becomes too hot to touch, but the foam cup can be held comfortably. The best explanation for this difference in temperature is that the foam cup-- A heats up much faster than the metal cup

Only one answer is correct among these 4 choices:
- has a higher specific heat than the metal cup
- is a better conductor of heat than the metal cup
- has a specific heat that is similar to that of the metal cup

Could you tell me which one is correct?

is a better conductor of heat than the metal cup