Certain trees, in fact, produce seeds only when fire heats them. If the fire removes thick shrubs and undergrowth, the water supply increases, aiding other plants and local animals.. Fire also may kill predatory insects or pests that live on and damage otherwise healthy trees.

Which set of context clues best points to the correct definition of undergrowth in the second sentence?

O "insects, pest, fire"
O "seeds, fire, animals"
O "thick shrubs, plants"
O "water supply"

The correct set of context clues that best points to the definition of undergrowth in the sentence is "thick shrubs, plants." This set of clues indicates that undergrowth refers to dense vegetation or plants that grow beneath or among larger shrubs or trees.