Sarah, a forensic investigator, is conducting an investigation on a macOS device that is suspected...

Option A. The User Account data is the most appropriate answer because the question is specifically about identifying when and who accessed the system , which points to authentication, account usage, and user activity evidence. CHFI v11 includes MAC Forensics Data, Log Files, and Directories , collecting and analyzing macOS artifacts , and analyzing macOS user activities as core examination areas.

In a macOS forensic investigation, artifacts associated with user accounts are the most relevant place to correlate logon activity, authentication-related behavior, and traces of user access. These can help examiners establish which account was involved, what user context was active, and when suspicious access may have occurred. This is far more aligned with the question than other directories centered on startup services, personal files, or browser activity.

The LaunchDaemons directory may reveal persistence or background services, but it is not the primary source for identifying user logon attempts. The Home folder contains user files and activity artifacts, while Safari history is limited to web browsing evidence. Since the objective is to determine access and authentication-related activity, User Account data is the strongest CHFI-aligned answer.