Question

When does a protostar become a true star?

Answer 1

Answer:

C) when nuclear fusion begins in the core

Explanation:

• The protostar is a main-sequence star that has a core temperature that exceeds abut 10 million K and is needed for the hydrogen to operate efficiently and the length of this process depends on nature and the stellar mass, as the huge massive star have a greater and bigger core and fusion takes fast.

• A protostar is also called as primitive star and represents the earliest phases of the process of the stellar evolution and takes place after it leaves form the main sequence star.