Why is corroborating witness statements with other evidence important?

• A. It makes the case longer.
• B. It reduces witness credibility.
• C. It increases reliability and reduces bias.
• D. It is optional and rarely used.

Answer: (C)

Verifying what a witness says with other evidence strengthens reliability by providing independent verification and helps reduce bias. People can misremember details, misperceive events, or be influenced by memory gaps or motives. When independent evidence—such as physical items, documents, surveillance, or other witnesses—confirms the same facts, the account becomes more credible because it’s less likely to reflect a single biased perspective. This cross-checking also helps spot inconsistencies, align timelines, and reveal errors, making the overall case stronger. It’s standard practice to bolster credibility and accuracy, not something that lengthens the case, diminishes credibility, or is optional.