Answer:
1. argument
2.syllogism
3. socrates
Explanation: I just did and these were the correct answers.
The infinitive that is used in the given sentence above is "to sail". So to make this into a gerund form, it will become "sailing". Therefore, the new sentence will be like this: The laughing boy in the boat likes SAILING. Hope this answers your question.
I would go with option a) or d)
