Answer:
b. Use Task Manager.
d. Use the taskkill command
Step-by-step explanation:
Task Manager will show all running processes. You can right click on the frozen process and select End Task
You can use taskkill with the /F and /IM switches to kill a specific process by name
For example suppose notepad is frozen you can use
taskkill /F /IM notepad.exe to forcibly kill that program
tasklist just lists the running processes
rebooting the system is always a last resort