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

Which set of context clues BEST points to the understanding of the meaning of undergrowth, in the second sentence?

"insects, fire, pest"

"seeds, fire, animals"

"thick shrubs, plants"

"water supply"

The set of context clues that best points to the understanding of the meaning of undergrowth is "thick shrubs, plants".

The set of context clues that BEST points to the understanding of the meaning of undergrowth in the second sentence is "thick shrubs, plants."

The set of context clues that best points to the understanding of the meaning of undergrowth, in the second sentence, is "thick shrubs, plants."