A system will never enter a deadlocked state if

the system chooses to ignore the problem altogether.

the system uses the detection and recovery technique.

the system uses the deadlock avoidance technique.

None of the above.

It suffers from the busy waiting problem.

Semaphore has a waiting queue associated with the semaphore.

When a process executes the wait$()$ operation and finds that the semaphore value is not positive, it will suspend itself.

A process that is suspended, waiting on the semaphore, should be restarted when some other process executes a signal$()$ operation.