Question

which sentence from the passage supports the reason why some culverts need to be modified?

a. \in many situations, animals apparently view roads as a barrier to movement and do not even try to cross them.\ (paragraph 7)

b. \many underpasses are unusable for wildlife species because of siltation blocking the culvert or walls associated with the culverts blocking access.\ (paragraph 10)

c. \the drainage leading to the culvert passes through citrus and avocado orchards as well as near homes in the small community of somis.\ (paragraph 12)

d. \many of these crossings intersect different types of roads in the region, including highways and freeways.\ (paragraph 6)

Explanation:

To determine which sentence supports why some culverts need modification, we analyze each option:

• Option A: Discusses animals viewing roads as barriers, not culvert modification reasons.
• Option B: States underpasses (culverts) are unusable for wildlife due to siltation or blocked access, which gives a reason to modify them (to make them usable).
• Option C: Describes the drainage path to a culvert, not a reason for modification.
• Option D: Talks about crossings intersecting roads, not culvert modification.

Answer:

B. "Many underpasses are unusable for wildlife species because of siltation blocking the culvert or walls associated with the culverts blocking access." (paragraph 10)