During short-lived bursts called thermal pulses,stars begin their
A) planetary nebula phase.
B) red-giant phase.
C) asymptotic giant branch phase.
D) main-sequence phase.

Question

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The Answer of During short-lived bursts called thermal pulses,stars begin their
A) planetary nebula phase.
B) red-giant phase.
C) asymptotic giant branch phase.
D) main-sequence phase.

During Short-Lived Bursts Called Thermal Pulses,stars Begin Their