Which type of evidence would be least likely to provide a clear link to a suspect in a forensic case?

Non-specific fabric serves as the least likely type of evidence to provide a clear link to a suspect because it lacks distinct characteristics that can be definitively tied to an individual. While fabric can sometimes be linked to a particular source, such as a specific piece of clothing, non-specific fabric could come from numerous sources and is often found in various garments.

In contrast, blood samples can be directly linked to an individual through DNA analysis, providing strong identification. Glass fragments can be matched to a particular source based on their physical and refractive properties, allowing forensic experts to connect them to specific locations or incidents. Fingerprints are unique to each person, making them highly reliable for identifying individuals associated with a crime scene. Therefore, when comparing these types of evidence, non-specific fabric is less compelling for establishing a direct connection to a suspect.