Which describes the type of evidence that can identify a unique source?

Individual evidence is the type of evidence that can identify a unique source because it is specific to a particular individual or item. This type of evidence has distinctive characteristics that can be tied back solely to one source, allowing for conclusive identification. For example, DNA evidence, fingerprints, and certain types of tool marks all fall under individual evidence because they possess unique features that can link them directly to a specific person or object.

In contrast, class evidence, which refers to evidence that can only be associated with a group and not a single source, lacks this level of specificity. Injunction evidence would not fit within the context of identifying sources, as it generally pertains to legal actions rather than physical evidence. Comparison evidence is a broader category that involves evaluating similarities and differences between items but does not inherently denote a unique identification as individual evidence does. Thus, individual evidence is crucial in forensic science for pinpointing a specific origin in investigations.