Which set does the passage cite as examples of chemicals in cigarette smoke…
2024
Which set does the passage cite as examples of chemicals in cigarette smoke that are harmful to health?
Answer: D. Hydrogen cyanide, carbon monoxide and ammonia — ConceptA passage-based factual question is answered from the information explicitly stated in the passage. First identify the exact fact requested, then…
- A.
Hydrogen cyanide and methane
- B.
Carbon monoxide and carbon dioxide
- C.
Nicotine and ammonia
- D.
Hydrogen cyanide, carbon monoxide and ammonia
Show answer & explanation
Correct answer: D
Concept
A passage-based factual question is answered from the information explicitly stated in the passage. First identify the exact fact requested, then compare every option with that statement rather than substituting outside assumptions.
Application
The passage states that cigarette smoke contains more than 7,000 chemicals and that at least 250 are harmful to health.
It then cites hydrogen cyanide, carbon monoxide and ammonia as examples of those harmful chemicals.
The required set must therefore reproduce all three examples named in that sentence.
Cross-check and contrast
Hydrogen cyanide and methane does not reproduce the cited set because methane is not one of the three examples in that sentence.
Carbon monoxide and carbon dioxide does not reproduce the cited set because carbon dioxide is not one of the three examples in that sentence.
Nicotine and ammonia combines a plant constituent discussed elsewhere in the passage with only one member of the cited set.
Therefore, the set cited in the passage is hydrogen cyanide, carbon monoxide and ammonia.