Electron Degeneracy, a Result of the Pauli Exclusion Principle That

Multiple Choice

Electron degeneracy, a result of the Pauli exclusion principle that prevents electrons from becoming crowded together beyond a certain limit, is important in:

A) the core of a low-mass star just before the start of core helium burning.
B) the core of a low-mass star just before the start of core hydrogen burning.
C) the core of a low-mass star during core hydrogen burning.
D) a low-mass protostar evolving toward the main sequence.