Final answer:
Without the specific context of the story, it is not possible to determine which late-night television personality appears in it. David Letterman and Johnny Carson are the late-night talk show hosts from the options provided, with David Letterman being the more contemporary figure. The correct answer is option c. David Letterman.
Step-by-step explanation:
To determine which late-night television personality appears in the story, we would need to know the context of the specific work you are referring to since this question could be related to many different texts or situations. However, if we are looking at popular late-night television personalities from the options provided, we can discuss each:
- Ed McMahon is known for his work as a sidekick on 'The Tonight Show Starring Johnny Carson'.
- Barbara Walters is a broadcast journalist, author, and television personality famous for her interviewing and news anchoring but not for hosting a late-night show.
- David Letterman hosted 'Late Night with David Letterman' and 'The Late Show with David Letterman', both of which were late-night television talk shows.
- Johnny Carson was the iconic host of 'The Tonight Show Starring Johnny Carson'.
Without the context of the story, it is impossible to definitively answer the question, but based on the options, David Letterman and Johnny Carson are the most likely candidates as they are the only two late-night talk show hosts listed. If the story is a contemporary one, David Letterman may be more likely as he hosted into the 21st century, whereas Johnny Carson retired in 1992.