Only the species of birds that migrate at night are at risk from the new tower lights. The sandpiper does not migrate at night.
Which one of the following must be true?
Answer and explanation
Correct answer: A. The sandpiper is not at risk from the tower lights
- Step 1: Being at risk requires migrating at night. Step 2. The sandpiper does not migrate at night, so it is not at risk. Answer: the sandpiper is not at risk. Why not the others: the statements do not say when or whether it migrates.
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