Multiple Choice
What is a helium flash?
A) the sudden onset of helium fusion in the core of a low- mass star
B) another name for the helium fusion reaction
C) a sudden brightening of a low- mass star, detectable from Earth by observing spectral lines of helium
D) the ignition of helium shell burning in a high- mass star with a carbon core
Correct Answer:

Verified
Correct Answer:
Verified
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