Fact 1: Ablack hole is formed by a high-mass star collapses.

Fact 2: Bigger mass means smaller star.

Given the two facts above, answer the question "a black hole is formed by a what diameter star" with the following options: 
- heat
 - matter
 - size
 - small
 - dead
 - nucleus
 - burning
 - deadly


 

    small     