Question

in the summer-time, when the snow and ice are gone and man travels by canoe and poling-boat, the huskies are thrown upon their own resources. they do not work; wherefore should they be fed? hence they become splendid scavengers and perform prodigies of benevolence in the matter of sanitation. nothing escapes them. not a bone but is cracked for its marrow; not a tin can but shines clean and bright on the inside. they are also excellent fishers, and during the salmon-run no dog goes hungry.
—\husky—the wolf-dog of the north,\ jack london
which detail best supports the central idea?
○ the huskies become excellent scavengers, eating whatever they can find.
× there is no work for the huskies during the summer, so no one feeds them.
○ men travel by canoe and poling-boat during the summer.
○ there is no ice or snow during the summer.

Explanation:

The central idea of the passage is that huskies rely on their own resources in summer because they do not work and are not fed. The detail "There is no work for the huskies during the summer, so no one feeds them" directly links the lack of work to the lack of feeding, which is the core reason for the huskies' self-reliance. Other options describe related summer conditions but do not explain the cause of the huskies' scavenging behavior.

Answer:

B. There is no work for the huskies during the summer, so no one feeds them.