Which sentence from the selection best expresses the central idea?
A. Crocodiles are the only reptiles that show parental care.
B. Kenichi (Ken) Okamoto, a student at the University of Chicago, read about the problem and decided to try to find out more about what was happening.
C. Natives hoping to earn a living started crocodile farms, where the reptiles are raised and slaughtered for their skins.
D. Trapping is one way that is often safer for both people and smaller crocodiles.
The best answer is A. Crocodiles are the only reptiles that show parental care.
This sentence expresses the central idea by highlighting a unique characteristic of crocodiles in relation to other reptiles, indicating a theme of parental care which is likely the focus of the selection. It captures the essence of what makes crocodiles noteworthy compared to other reptiles, making it a strong central statement.
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