The student wants to present the study's main result along with how it was obtained. 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:
- Marine biologist Ana Ferreira studied whether ship noise affects cod.
- She recorded cod behaviour in tanks with and without recorded engine noise.
- With engine noise, the cod ate 30% less over two hours.
- Cod are a commercially important fish.
- The study used 48 cod across 12 tanks.

Accepted Answer

A. By comparing cod in tanks with and without recorded engine noise, Ferreira found that the noise cut the fish's feeding by 30% over two hours.. The goal has two parts: the result AND the method. Choice A gives the method (tanks with and without noise) and the result (30% less feeding).

Answer

B. Ferreira's study used 48 cod across 12 tanks. — This gives sample sizes but no result.

Answer

C. Cod, a commercially important fish, ate 30% less when exposed to engine noise. — This gives the result but not how it was obtained.

Answer

D. Ferreira studied whether ship noise affects cod, which are commercially important. — This gives the research question and never the result.

Expression of Ideas practice question

Answer: A. By comparing cod in tanks with and without recorded engine noise, Ferreira found that the noise cut the fish's feeding by 30% over two hours.

Why the other answers are wrong

More Expression of Ideas questions