Select the most appropriate meaning of the given Idiom:-

"To be a Back seat driver"

Giving unwanted advice

The most appropriate meaning of the idiom "to be a backseat driver" is giving unwanted advice. The idiom comes from the idea of someone sitting in the backseat of a car and giving the driver unsolicited advice on how to drive. In a figurative sense, to say that someone is "being a backseat driver" means that they are giving unwanted advice or criticism to someone who is doing something.

The other options are not as accurate descriptions of the meaning of the idiom. To be confused is not the same as giving unwanted advice. Driving from behind is not typically associated with the idiom "to be a backseat driver." Advising a driver is not typically associated with the idiom "to be a backseat driver."