Imagine a finite state machine that controls an alarm clock. It waits idly until its internal clock tells it that it is time to wake up$,$ at which point it begins to sound the alarm. It keeps sounding the alarm until the user presses the "off" or "snooze" buttons. The user's action of hitting the "snooze" button is called:

Question $65$ options:

a$)$

A transition

b$)$

A production rule

c$)$

An input

d$)$

A state