A black hole is a body in space which does not allow any radiation to come out. This property is due to its
-
Very small size
-
Very large size
-
Very low density
-
None of the above
D
Correct answer
Explanation
The defining property of a black hole is its extremely strong gravitational field, which is a consequence of its enormous mass compressed into a very small space (high density). This gravity is so intense that not even light can escape. None of the given options correctly state this - size alone (small or large) is not the reason, and low density is incorrect. The correct answer is 'None of the above' because the actual cause is high density/gravity, which isn't listed.