Hard Astronomy Question- Please Help?

Question

The following question may be on my final. I have looked in our text, but I just can not find this answer. Can someone please help...

The central cores of massive main sequence stars
a. produce energy by the proton-proton chain.
b. have a very low opacity.
c. transmit energy outward by convection.
d. burn their nuclear fuels more slowly than low mass main sequence stars.
e. have lower temperatures than the central cores of low mass main sequence stars.

Answer 1

The answer is D.

Answer 2

D and E are incorrect; they exhaust their fuel more rapidly and have hotter cores. C is correct and B is incorrect; energy transport from the core is predominantly convective because of the higher core opacity. A is correct for main sequence stars in general; "The basic reactions which operate on the main sequence are fusion reactions which convert hydrogen nuclei (protons) into helium nuclei." See the reference (source of the quote above).