In note-taking, what does "Who" refer to?

In the context of note-taking for investigative purposes, "Who" specifically pertains to the individuals involved in the case. This includes not only the primary subjects, such as suspects or victims, but also any witnesses or relevant parties who may have information pertinent to the investigation. Understanding who is involved is crucial for building a comprehensive picture of the situation, enabling the investigator to track relationships and interactions that could influence the case. Properly identifying and documenting these individuals helps ensure that all relevant testimonies can be gathered and evaluated as part of the investigative process.

The other options, while important details in an investigation, do not relate to "Who." Details like the location of the crime, the time of the incident, and the method of the crime provide context but do not identify the people involved in the case, which is what "Who" specifically addresses.