UP Reading Vocabulary Practice Test

This item centers on how we describe the believability of information and the trust we place in a source. Credibility refers to the quality of being believable and worthy of trust—how convincing a claim seems and how much confidence we have in the person or source presenting it. That mix of believability and trust is what makes it the best fit for “believable or deserving trust.”

Reliability focuses on consistency over time—whether something can be depended on to perform as expected. Plausibility is about something seeming reasonable or probable on the surface, but it doesn’t guarantee truth or trust in the source. Trustworthiness highlights the character or moral reliability of the source, i.e., whether you can trust them, but it doesn’t automatically convey how believable a specific claim is. So credibility uniquely captures both the sense of believability and deserved trust.