Fact 1: Amirror is used for reflecting light.

Fact 2: Typical mirror materials are quartz or nickel plated aluminum.

Given the two facts above, answer the question "what are used for reflecting light?" with the following options: 
- extremely important
 - Electrical energy
 - an electron lens
 - Bundles of fibers
 - quart or nickel plated aluminum
 - an external framework
 - that material's properties
 - To another location like underground


 

     quart or nickel plated aluminum    