Please answer the following question by reasoning step-by-step.
The vascular cambria allows:\nOptions:\n- (A) Exfoliation\n- (B) roots to grow\n- (C) plant\n- (D) movement\n- (E) Animal survival\n- (F) soil\n- (G) liver\n- (H) rapid expansion

(B)
Roots grow in length and width from primary and secondary meristem.

Vascular cambium is a primary meristem.

Roots grow in length and width from the vascular cambium.

.

So, the answer is (B)