Final answer:
The software application that displays programs, processes, and services running on your computer and helps investigate possible points of failure is called a task manager.
Step-by-step explanation:
A utility program that reports the status of running programs. A task manager allows you to view which programs are currently running, monitor system resources, and terminate any unresponsive processes or services. It is a useful tool for troubleshooting and diagnosing issues with your computer.
Task managers are also used to review which applications and background processes are running, as well as to stop an app that is not responding. See Ctrl-Alt-Del, Command-Option-Escape, Win Task Manager and task management.
For example, if you notice that a program is using a large amount of CPU or memory, you can use the task manager to end that program, which may help improve the overall performance of your computer.