The most massive star known in the universe is thought to be r136a1, which may be as much as 256 times the mass of our sun. what do r136a1 and our sun have in common? a. they have the same amount of helium. b. they have the same amount of hydrogen. c. energy moves slowly through their layers. d. nuclear fission reactions power them.

R136a1, according to your question, is much larger than our sun. For it to stay a star and not decompose, it must have a proportional amount of matter in it compared to our sun; otherwise, *poof* it’s not a star anymore. A and B are wrong in this case.

The sun provides the insane amount of energy it does by the process of fusion, not fission; every second, more than 600,000,000 tons of hydrogen is converted to helium (that’s 1.2x10^12 pounds, aka too many zeroes). Because of this, D is also wrong.

This leaves your final possibility, C, as the correct answer.

0.50 hope this