Imagine a jukebox that plays different songs by using a finite state machine. If no song is currently playing, a user can insert a coin, which brings them to a menu where they can select the next song. The part of the jukebox's operation where no song is currently playing and it is waiting for the user to do something is called:

Question $10$ options:

a$)$

A production rule

b$)$

A transition

c$)$

An input

d$)$

A state