Reasonableness

Quality of being reasonable.

the state of having good sense and sound judgment; "his rationality may have been impaired"; "he had to rely less on reason than on rousing their emotions"

the property of being moderate in price or expenditures; "the store is famous for the reasonableness of its prices"; "the modestness of the living standards here becomes obvious immediately"

goodness of reason and judgment; "the judiciary is built on the reasonableness of judges"

the quality of being plausible or acceptable to a reasonable person; "he questioned the tenability of my claims"