Select the most appropriate meaning of the given idiom.

A square deal

A fair agreement

The most appropriate meaning of the idiom "a square deal" is a fair agreement.

It means an honest and fair transaction or deal. The idiom comes from the idea that a square is a shape that is equal on all sides, and therefore represents fairness.

The other options are not correct.

• A nice decoration: This is not the same as a square deal.
• A dishonest transaction: This is the opposite of a square deal.
• An unfair agreement: This is the opposite of a square deal.