单选题 Which of the following would be a likely theme for the next paragraph?

A、 Naturally changing ecological conditions.
B、 Animals that have become extinct.
C、 Achievements of the government Endangered Species Program.
D、 Programs that have destroyed natural habitats.

【正确答案】 C

【答案解析】[分析] 推断题型。本段提到了由于生态环境的变迁和人类活动的破坏等因素造成了一些物种的灭绝，段尾提到由国会授权，美国渔业及野生动物署实施挽救濒危物种计划且提到这一计划的主要目标。根据逻辑推理，下段应提及政府实施这一计划所带来的变化，因此选项C．“政府实施这一计划所带来的成就。”应为答案。