Which sentence states the main idea of the passage?
A. Woolly adelgids feed on the white wool that protects them.
B. Woolly adelgids live along the creek in the national park.
C. Woolly adelgids are killing hemlock trees in the national park.
D. Woolly adelgids are becoming extinct.
C. Woolly adelgids are killing hemlock trees in the national park.
To determine the main idea of the passage, we can analyze the information provided in each sentence and identify the one that encapsulates the central point.
In Sentence A: "Woolly adelgids feed on the white wool that protects them," the information describes a characteristic of woolly adelgids, but it does not convey the primary focus of the passage.
In Sentence B: "Woolly adelgids live along the creek in the national park," this statement provides information about the location where woolly adelgids can be found, but it is not the main idea or the central focus of the passage.
In Sentence C: "Woolly adelgids are killing hemlock trees in the national park," this statement highlights a critical point, suggesting that woolly adelgids are responsible for the death of hemlock trees in the national park. This sentence reveals a significant problem caused by woolly adelgids and is likely the main idea of the passage.
In Sentence D: "Woolly adelgids are becoming extinct," this statement implies that woolly adelgids are on the verge of extinction. However, this information is not mentioned in the other sentences and does not align with the central focus of the passage.
Therefore, the sentence that states the main idea of the passage is C: "Woolly adelgids are killing hemlock trees in the national park."