Which of the following happens when a low-mass star runs out of fuel? Choose all that apply.
A. Its core becomes a white dwarf
B. Its outer layers form a nebula, or vast cloud of gas and dust
C. its outer layers expand, and the star becomes a red giant
D. gas and dust in a nebula contract to form a protostar
2 answers
Also, can anyone explain this?
it is abc if you are on connexus you need to attend the live lessons cause in lessons they dont show you everything you need to go on the live lessons