Answer:
c. A store owner gives elaborate street directions to Madison Square Garden to a gentleman from Wisconsin.
Explanation:
Message tuning is a term used to refer to a situation when the spoken message is not appropriate for the listening audience. That is, the message is too complex, or too far-fetched, or uses terms that are only recognized by a group of people who are not present at the moment. It's like giving a lecture on a medical subject, using language full of technical terms, to an audience of 8 year olds.
Among the options given in the question above, the one that gives the best example of message tuning is the letter C, as it shows a situation where a store owner gives elaborate instructions about Madison Square Garden to a Wisconsin gentleman who doesn't know the place.