16Hit1600
Expression of IdeasEasyIntroducing a fish to newcomers

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - The coelacanth is a fish that lives in deep water. - It was believed to have been extinct for 65 million years. - A living coelacanth was caught off South Africa in 1938. - Its fins are fleshy and limb-like.

The student wants to introduce the coelacanth to an audience unfamiliar with it. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. The coelacanth, a deep-water fish believed extinct for 65 million years, was found alive off South Africa in 1938.Correct
  2. B. A coelacanth was caught in 1938.
  3. C. The coelacanth has fleshy, limb-like fins.
  4. D. The coelacanth, like most extinct fish, is known only from fossils.

Answer: A. The coelacanth, a deep-water fish believed extinct for 65 million years, was found alive off South Africa in 1938.

What it is and the remarkable fact about it — choice A introduces the coelacanth.

Why the other answers are wrong

B. A coelacanth was caught in 1938.
No sense of what a coelacanth is.
C. The coelacanth has fleshy, limb-like fins.
A detail, with no introduction.
D. The coelacanth, like most extinct fish, is known only from fossils.
A living one was caught in 1938; it is not known only from fossils.

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