Carbon fusion occur in high-mass stars but not in low-mass stars because
A)the cores of low-mass stars never contain significant amounts of carbon.
B)the cores of low-mass stars never get hot enough for carbon fusion.
C)only high-mass stars do fusion by the CNO cycle.
D)carbon fusion can occur only in the stars known as carbon stars.

Question

Quizplus · Accepted Answer

Low-mass stars do not have enough gravitational pressure in their cores to reach the high temperatures required for carbon fusion.

Carbon Fusion Occur in High-Mass Stars but Not in Low-Mass