You are presented with the question "What is formed by a high-mass star collapses?" and the following answer choices: 
- grave error
 - an object
 - a gravity drain
 - mass grave
 - deoxyribonucleic acid
 - Physical weathering
 - gravity depletion
 - hydrogen and oxygen

Now knowing that ablack hole is formed by a high-mass star collapses and essentially, a black hole is a gravity drain, choose the best answer.


 

   a gravity drain      