Final answer:
Gloria uses flattery by complimenting Richard's note-taking skills to influence him to lend her his notes.
Step-by-step explanation:
Gloria is appealing to flattery when she compliments Richard on the quality of his notes before asking to borrow them. By praising Richard's note-taking skills, she is using a strategy that aims to make someone more receptive to a request. Flattery involves complimenting someone to influence their behavior, which is different from appealing to authority, where someone would use the position or credibility of an expert to support their request, or social proof, which would involve citing the consensus or actions of others to justify behavior. Consistency is not directly related to Gloria's approach in this context.