part a\nblack holes are essentially \nview available hint(s)\nhint 1.\ndefine a black hole.\nvery dark…

part a\nblack holes are essentially \nview available hint(s)\nhint 1.\ndefine a black hole.\nvery dark stars\nany object with an escape velocity greater than the speed of light\nthe vacuum cleaners of space\nnot confirmed as existing

part a\nblack holes are essentially \nview available hint(s)\nhint 1.\ndefine a black hole.\nvery dark stars\nany object with an escape velocity greater than the speed of light\nthe vacuum cleaners of space\nnot confirmed as existing

Answer

Brief Explanations:

A black - hole is defined as an object with an escape velocity greater than the speed of light. This means that nothing, not even light, can escape from it. Dark stars is a misnomer, black - holes are not just dark stars. Saying they are "vacuum cleaners of space" is a non - scientific and metaphorical description. Black holes have been confirmed to exist through various astronomical observations.

Answer:

B. any object with an escape velocity greater than the speed of light