Concept:Savanna is tropical grassland with scattered trees and dry-region shrubs or scrub.
Explanation:Savanna trees generally have deep roots to reach underground water, not shallow roots.
They also shed their leaves during the dry season, so they do not grow throughout the year.
Savanna is neither dense forest nor thick vegetation.
Instead, it consists of long grasses with isolated trees and, in drier areas, scattered scrub and thorny bushes.
Thus, scrub is the feature directly associated with savanna vegetation.
Answer:D. scrub