The correct answer is B because com.apple.recentitems.plist is the user-level preference artifact associated with recently used items and application-related recent activity in macOS. Community and forensic references identify this plist in the user’s Preferences directory as storing recent-items information that can support timeline reconstruction of user activity. This makes it the best fit when the investigator wants a user-specific plist that reflects application usage around a suspicious time window. Application Support is a directory rather than the specific plist artifact being asked for. com.apple.desktop.plist and com.apple.dock.plist may contain useful configuration or interface state, but they are not the most directly relevant source for recent-item style application usage. CHFI v11 includes macOS forensic data, log files, and directories, so candidates are expected to know where user-activity artifacts reside inside the home profile. Since the question explicitly points to ~/Library/Preferences and asks for the plist that records usage relevant to recent activity, com.apple.recentitems.plist is the most appropriate answer.