Which type of evidence will unequivocally link a crime scene to a suspect?

Linking evidence is the type of evidence that unequivocally connects a crime scene to a suspect. This form of evidence is crucial in criminal investigations because it directly ties an individual to a specific act or scene of a crime. Examples of linking evidence might include DNA, fingerprints, or specific items found at the crime scene that match personal belongings of a suspect. This type of evidence meets the critical requirement of establishing a direct relationship between the suspect and the criminal act, thereby often playing a decisive role in the prosecution's case.

In contrast, motive evidence pertains to the reasons behind why someone may have committed a crime but does not directly link an individual to the crime scene. Class evidence, while useful for narrowing down suspects to a group based on shared characteristics, lacks the specificity needed to connect an individual definitively to a crime. Circumstantial evidence may suggest that a suspect could have been involved in a crime but does not provide the direct link that linking evidence does. Therefore, linking evidence is a vital component in solidifying the connection between a crime scene and a suspect.