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

Question

While researching a topic, a student has taken the following notes:
- The Great Barrier Reef lies off the northeast coast of Australia.
- It is the largest coral reef system in the world.
- It stretches for about 2,300 kilometres.
- It is made up of roughly 2,900 individual reefs.
- Since 2016, coral bleaching caused by warming water has damaged large sections of it.

Accepted Answer

A. The Great Barrier Reef, off the northeast coast of Australia, is the world's largest coral reef system, stretching about 2,300 kilometres.. An introduction for an unfamiliar audience should say what the reef is and where it is. Choice A gives its location, its claim to fame and its size — the basics someone new to the subject needs.

Answer

B. Since 2016, coral bleaching has damaged large sections of the Great Barrier Reef. — This assumes the reader already knows what the reef is and jumps to its recent damage. It doesn't introduce anything.

Answer

C. The reef is made up of roughly 2,900 individual reefs rather than 2,300. — This sets two numbers against each other as if correcting a mistake, and neither tells a newcomer what or where the reef is.

Answer

D. Warming water causes coral bleaching. — This is a general fact about bleaching and never mentions the reef at all.

Expression of Ideas practice question

Answer: A. The Great Barrier Reef, off the northeast coast of Australia, is the world's largest coral reef system, stretching about 2,300 kilometres.

Why the other answers are wrong

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