question in book:
Pick which sentence is not logical.
Options:
- Sentence A: "he play the piano by mouth"
- Sentence B: "he play the piano by hands"

standard solution:
You can't hit the keys with your mouth.
The answer is Sentence A.

question in book:
Of the following two sentences, which one is against common sense?
Options:
- Sentence A: "I have to return the borrowed book to the library, or I would have souvenir"
- Sentence B: "I have to return the borrowed book to the library, or I would have penalty"

standard solution:
Library books are only lent to people, they don't get to keep them.
The answer is Sentence A.

question in book:
Which of these sentences doesn't make sense?
Options:
- Sentence A: "The river flows from the mountains to the sky"
- Sentence B: "The river flows from the mountains to the plain"

standard solution:
It would defy gravity for a river to flow into the sky.
The answer is Sentence A.

question in book:
Which of the following two sentences does not make sense?
Options:
- Sentence A: "Fans have external hanging blades"
- Sentence B: "Air conditioner with external hanging blades"

standard solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Fans with external hanging blades would be much too dangerous.
The answer is Sentence A.