Question to you: What grow in width and length.?
Options:
- (A) crocodiles
- (B) sedimentary rocks
- (C) vegetation
- (D) remains of prehistoric life
- (E) swamp vegetation
- (F) shrub beds
- (G) underground systems
- (H) loose dirt.
Let's reason step-by-step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Roots grow in length and width from primary and secondary meristem. Kids see the underground root systems of trees and then an aerial view of plants in the city. Underground systems grow in width and length. Final answer: (G).