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To many colonists, the promise of freedom was irresistible as a glass of lemonade on a hot day.

What does "Irresistible as a glass of lemonade on a hot day" mean?
please help me
Question 3 options:

The people were doubtful things would work out for them


The people thought liberty was a very appealing idea


People were dying from the new hot climate


People were excited over the Statue of Liberty