[Which of these sentences doesn't make sense?
Options:
- Sentence A: "He checked the time in his pen"
- Sentence B: "He checked the time in his watch"
]

My step-by-step solution: A pen can only write and cannot show the time.... So the answer is [Sentence A]

[Which of the following sentences is nonsensical?
Options:
- Sentence A: "He ate an rotten potato."
- Sentence B: "He ate a potato."
]

My step-by-step solution: He would not eat a potato if it were rotten.... So the answer is [Sentence A]

[One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "She was writing with a pen."
- Sentence B: "She was writing with a book"
]
My step-by-step solution: A book does not have any ink so it cannot be used as a writing implement.... So the answer is [Sentence B]