You are presented with the question "Cells have multiple repair mechanisms to fix what?" and the following answer choices: 
- a tree falling
 - direct damage to the lungs
 - that material's properties
 - damaged DNA duplication
 - an area swollen with pus
 - Veins and arteries.
 - the body's largest organ
 - The bending of a ray of light

Now knowing that cells have multiple repair mechanisms to fix mutations in DNA and and if the damaged DNA is duplicated, it causes mutation, choose the best answer.


 

    damaged DNA duplication     