A.Contracted star with intense gravitational pull

B.Star with very low surface temperature

C.Star with no atmosphere

D.Pulsating star

Ans: A (Contracted star with intense gravitational pull)

Explanation: Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star. They are regions of space where gravity is so powerful that even light can’t escape.