Select the option that can be used as a one-word substitute for the given group of words.

The quality of being honest and having strong moral principles

Integrity

The word that can substitute the given group of words is integrity.

• Stuck-up means arrogant or snobbish.
• Integrity means the quality of being honest and having strong moral principles.
• Uptight means tense, nervous, or anxious.
• Ridicule means to make fun of someone or something in a way that is scornful or mocking.

Integrity is the most appropriate word for the given group of words because it specifically refers to the quality of being honest and having strong moral principles. It is derived from the Latin word integer, meaning "whole" or "complete."