If cells have multiple repair mechanisms to fix damaged DNA duplication, then cells have multiple repair mechanisms to fix what?

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

 

    damaged DNA duplication      