When observing elephant herds, biologists note that the matriarch—the oldest female—leads the group. Her authority is maintained not through force, but through wisdom and memory of water sources, which _______ the survival chances of the entire herd during droughts.
8
readingWhich choice completes the text with the most logical and precise word or phrase?
A
threaten
B
reinforce
C
question
D
conceal
Correct Answer: B
Choice B is the best answer. The text states that the matriarch's wisdom helps the herd find water. This helps them survive. "Reinforce" means to strengthen or support.
Choice A is incorrect because wisdom helps, not "threatens," survival. Choice C is incorrect because "question" means to doubt. Choice D is incorrect because "conceal" means to hide.