Read the passage and answer the question:
"Road ecology research reveals that linear highway corridors fragment wildlife populations, leading to genetic isolation and inbreeding depression. Installing vegetated overpasses and subterranean culverts retrofitted with native flora restores habitat connectivity, reducing vehicular wildlife collisions by over eighty percent in monitored reserves."
According to the passage, how do wildlife crossings mitigate highway ecological impacts?
Answer and explanation
Correct answer: C. by restoring habitat connectivity and reducing vehicular animal collisions
- Step 1: Locate the explicit findings: vegetated overpasses and culverts 'restores habitat connectivity, reducing vehicular wildlife collisions by over eighty percent'.
- Step 2: The crossings restore gene flow and drastically curtail roadkill collisions.
Answer
by restoring habitat connectivity and reducing vehicular animal collisions.
Why not the others: 'by converting asphalt highways into unpaved rural hiking trails' is untrue as highways remain operational; 'by eliminating the need for predatory carnivores in national parks' contradicts ecological balance; 'by trapping migrating animals in secure holding facilities indefinitely' is false as crossings facilitate free movement.
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