As a protostar evolves towards becoming a main-sequence star, its core temperature will
A) always increase.
B) always decrease.
C) first increase, then decrease.
D) first decrease, then increase.
E) always be the same value.

Question

Quizplus · Accepted Answer

As a protostar evolves, gravitational contraction causes its core temperature to increase until nuclear fusion begins, marking its transition to a main-sequence star.

As a Protostar Evolves Towards Becoming a Main-Sequence Star, Its