The correct answer is B. Restart.
Restarting your computer is the most common way to fix a problem, add a new program, or make a configuration change. When you restart your computer, it shuts down completely and then starts up again. This gives your computer a chance to start fresh and can often fix problems that have been caused by software or hardware issues.
Shut Down is the process of powering off your computer completely. This is different from restarting, which powers off your computer and then restarts it. When you shut down your computer, all of the programs and processes that are running are stopped, and the data in your computer’s memory is lost.
Sleep is a power-saving mode that allows your computer to use less power while it is not in use. When you put your computer to sleep, it saves the current state of your work and then powers down most of its components. Your computer can be woken up quickly from sleep by pressing a key or moving the mouse.
Hibernate is a power-saving mode that is similar to sleep, but it saves more power. When you hibernate your computer, it saves the current state of your work and then powers down completely. Your computer can be woken up from hibernation more quickly than from sleep, but it takes longer to start up completely.
In conclusion, the most common way to fix a problem, add a new program, or make a configuration change is to restart your computer.