The Event That Follows the Asymptotic Giant Branch (AGB)phase in the Life

Multiple Choice

The event that follows the asymptotic giant branch (AGB) phase in the life of a low-mass star is

A) the ejection of a planetary nebula.
B) core collapse and a supernova explosion.
C) helium flash and the start of helium burning in the core.
D) the onset of hydrogen burning in the core.