Answer:
The people thought liberty was a very appealing idea
Step-by-step explanation:
Irresistible is 'too tempting to be resisted', so the second choice would be correct.
The first choice is wrong because nothing indicates doubt in the sentence in question.
The third choice is wrong because 'hot day' is merely part of a simile; nothing is being said about the climate.
The fourth choice is wrong because nothing is being said about the Statue of Liberty.