Fact 1: Sunlight and rain can cause a rainbow.

Fact 2: Rainbows Rainbows are important symbols to the Navajo people.

Given the two facts above, answer the question "what can cause an important symbol to the Navajo people?" with the following options: 
- density
 - energy of moving objects
 - sunlight and rain
 - volume
 - colors of the spectrum
 - mass
 - rain or sun shine
 - rays or beams


 

   sunlight and rain      