Set 1: Inferences
Explanation
PASSAGE
The cuttlefish can change its skin color in less than a second. Scientists believe this rapid color change serves multiple purposes: camouflage from predators, communication with other cuttlefish, and intimidation of rivals.
What does the passage imply about the cuttlefish's color-changing ability?
Detailed Explanation
This question asks you to draw a logical conclusion from the text. The passage lists three purposes: camouflage, communication, and intimidation. An adaptation serving 'multiple purposes' is by definition versatile. A valid inference must be supported by evidence in the passage, even if not stated directly. Look for clues in the text that strongly suggest the answer. Avoid conclusions that require assumptions beyond what's written. Valid inferences are strongly supported by multiple pieces of evidence in the text. Be cautious of choices that go too far beyond what the passage actually states. The best inference is the one most directly supported by textual evidence.
Key Evidence:
• "serves multiple purposes"
• "camouflage"
• "communication"
• "intimidation"
Why others are wrong: A (It helps with intimidation of rivals—an advantage.), B (The text explicitly says 'multiple purposes.'), C (Water depth is not discussed.).