question 11\n5 pts\nafter its temperature rises to 10,000,000°c, a protostar becomes a star when\nnuclear…

question 11\n5 pts\nafter its temperature rises to 10,000,000°c, a protostar becomes a star when\nnuclear fusion ends.\nnuclear fusion begins.\nnuclear fission begins.\nnuclear fission ends.

question 11\n5 pts\nafter its temperature rises to 10,000,000°c, a protostar becomes a star when\nnuclear fusion ends.\nnuclear fusion begins.\nnuclear fission begins.\nnuclear fission ends.

Answer

Brief Explanations:

A protostar becomes a star when nuclear fusion begins. Nuclear fusion in a star's core converts hydrogen into helium, releasing energy that counteracts the gravitational collapse of the star - material. This balance marks the transition from a protostar to a star. Nuclear fission is not the process that makes a protostar into a star.

Answer:

B. nuclear fusion begins.