Final answer:
The tools to monitor performance in a Windows OS are PerfMon, Task Manager, and Event Viewer, making 'All of the above' the correct choice.
Step-by-step explanation:
The tools to monitor performance within a Windows guest operating system include PerfMon (Performance Monitor), Task Manager, and Event Viewer. Each tool offers different capabilities for analyzing system performance and health. PerfMon provides in-depth monitoring and analysis of various system components over time. Task Manager gives a quick overview of the system's current usage, including applications, processes, performance, and more. Event Viewer logs detailed system and application events, which can be helpful for troubleshooting issues. Thus, the correct answer to which tools can monitor performance in a Windows OS is D) All of the above.