The description that best summarizes the steps that take place during black hole formation, in the correct order, is:
A massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; core of star collapses.
This sequence captures the essential steps leading to the formation of a black hole. A massive star runs out of nuclear fuel, leading to a dominance of gravitational forces, culminating in a supernova explosion, and finally resulting in the collapse of the remaining core into a black hole.