Final answer:
Facts provide reliability to an eyewitness account and play a crucial role in determining the reliability of eyewitness testimony.
Step-by-step explanation:
Facts provide reliability to an eyewitness account. They are verifiable information that can be supported and proven to be true. In argumentative texts, the strongest arguments are those that are based on verifiable facts and reasonably drawn inferences. In the case of eyewitness testimony, facts play a crucial role in determining the reliability of the testimony provided by witnesses.