Fact 1: Roots grow in length and width from primary and secondary meristem.

Fact 2: Vascular cambium is a primary meristem.

Given the two facts above, answer the question "The vascular cambria allows:" with the following options: 
- Exfoliation
 - roots to grow
 - plant
 - movement
 - Animal survival
 - soil
 - liver
 - rapid expansion


 

  roots to grow       