Black holes are:

A) Star remnants from super massive stars which gravitational collapse can not be halt by electron or neutron degeneracy and gravity is so strong in their vicinity that not even light can escape.

B) Regions of the universe with space empty of matter or radiation that becomes so dark that forbids us from investigating it.

C) Regions of space where matters is not sufficiently hot to radiate in the visible spectrum.

A) Star remnants from super massive stars which gravitational collapse can not be halt by electron or neutron degeneracy and gravity is so strong in their vicinity that not even light can escape.

What is Black hole ?

Black holes are volumes of space where gravity is extreme enough to prevent the escape of even the fastest moving particle .

Black hole is formed by the collapse of individual star which are relatively small but incredible dense which leads to a great amount of gravitational force pulling on objects .

It is a region of spacetime where gravity is so strong that nothing( no particle , light etc ) can escape from it

hence , correct option is A) Star remnants from super massive stars which gravitational collapse can not be halt by electron or neutron degeneracy and gravity is so strong in their vicinity that not even light can escape.

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