Select the most appropriate meaning of the given idiom.

A cock and bull story

An imaginary story

The most appropriate meaning of the idiom "a cock and bull story" is an imaginary story. This idiom is used to describe a story that is so unbelievable that it is clearly made up. The image of a cock and bull is one of absurdity and nonsense.

The other options for the meaning of the idiom are not accurate. To get into trouble means to find oneself in a difficult or unpleasant situation. A sudden shock means a surprise that is sudden and unexpected. Not to the point means irrelevant or not relevant to the topic at hand.