What is one suggested explanation for why Tule geese breed in Alaska?

• A. The text does not provide a specific explanation for breeding in Alaska
• B. A warmer climate attracts breeding
• C. Higher food availability in Alaska
• D. Alaska is the only wintering site

Answer: (A)

The main idea here is whether the text actually provides a reason for why Tule geese breed in Alaska. If the passage doesn’t give any specific explanation, the only supported conclusion is that no explanation is provided in the text. The other options would require the author to state particular factors—warmer climate, more food, or that Alaska is the sole wintering site—which aren’t presented in the text. So the correct interpretation is that no specific breeding reason is given.