TOEFL Listening: TPO-TOEFL阅读TPO - H7T7PQRCSO064949N$

According to paragraph 2, which of the following is NOT characteristics of a barrier reef? A. It is located away from the shore of the neighboring land. B. It is separated from neighboring land by a wide channel. C. It is located in deep ocean water. D. It surrounds a small, central lagoon.