Select the most appropriate option that can substitute the underlined segment in the given sentence.
The Government must strive to provide a/an fair and square deal to the citizen of its country.

The correct answer is honest and straightforward.

Explanation:
The idiom "fair and square" means doing something in an honest, open, just, and straightforward manner, without any deceit, cheating, or unfair advantage.
In the given context, "The Government must strive to provide a/an fair and square deal to the citizen of its country," replacing the underlined idiom with "honest and straightforward" preserves the exact intended meaning of providing an equitable and transparent deal to citizens.

Let's analyze why the other options are incorrect:
• exclusive and unreal: "Exclusive" implies restricted access, and "unreal" means imaginary or fake, which does not fit the context of a fair deal.
• violent and immoral: "Violent" refers to physical force or aggression, and "immoral" means unethical, which is contrary to fairness.
• forward and backward: Refers to directions or movements, which is unrelated to the quality of a deal.