What is the meaning of reasonableness?

noun

• The state of having good sense and sound judgment.
  • usage: "his rationality may have been impaired"; "he had to rely less on reason than on rousing their emotions"
  • synonyms: rationality, reason
• Goodness of reason and judgment.
  • usage: "the judiciary is built on the reasonableness of judges"
• The property of being moderate in price or expenditures.
  • usage: "the store is famous for the reasonableness of its prices"; "the modestness of the living standards here becomes obvious immediately"
  • synonyms: moderateness, modestness
• Moderation in expectations.
  • usage: "without greater reasonableness by both parties we will never settle this matter"
• The quality of being plausible or acceptable to a reasonable person.
  • usage: "he questioned the tenability of my claims"
  • synonyms: tenability, tenableness