Question

which event triggers the start of black hole formation? (1 point)
a massive star depletes its stores of hydrogen and helium.
the gravitational forces acting on a massive star decline rapidly.
radiation emitted by a massive star increases.
a supernova blows a massive star apart.
check answer
remaining attempts : 3

Explanation:

A black - hole formation starts when a massive star runs out of nuclear fuel (hydrogen and helium). Without the outward pressure from nuclear fusion, the star collapses under its own gravity. A supernova explosion occurs when the core collapses, and if the remaining mass is large enough, a black - hole is formed.

Answer:

A. A massive star depletes its stores of hydrogen and helium.