Question

The Sun and most stars are made almost entirely of a. hydrogen and carbon. b. helium and nitrogen. c. oxygen and nitrogen. d. helium and hydrogen.

Answer 1

So the question is what are the Sun and most stars almost entirely made of. So most stars, including our Sun are made out of hydrogen and helium. There is also a small percentage of oxygen, carbon and nitrogen and also very small quantities of iron, silicone and other metals. So the correct answer is d.