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Which sentence from "Big Wolves and Ordinary Wolves" expresses a central idea in the text?
Big Wolves and Ordinary Wolves
O Other biologists agreed wolves are extreme opportunists when it comes to food.
O "The thing was huge to me, compared to what I normally handled," Adams said, noting the average weight of male wolves in Denali is 105 pounds.
"The weights of wolves fluctuate greatly depending on food availability."
Most trappers don't weigh the wolves they catch because they skin them in the field, said Al Barrette at Fairbanks Fur Tannery.
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Answer 1

The sentence that expresses a central idea in the text is: "The weights of wolves fluctuate greatly depending on food availability." This sentence reflects the main theme of the article, which explores how food availability and environmental factors can affect the behavior and physical characteristics of wolves.