Choose the correct meaning of the following idiom:

Above board

honest and straightforward

The correct meaning of the idiom "above board" is honest and straightforward. It means that something is done in an open and honest way, without any deception or trickery. The idiom is thought to have originated from the phrase "above the board," which refers to something that is visible and cannot be hidden.

The other options are incorrect. "Boasting person" means someone who talks about their own achievements in a way that is considered arrogant or boastful. "A man with arrogance" means someone who has a feeling of superiority over others. "A dishonest person" means someone who is not honest or truthful.