Successful stand-up comedians are able to keep the attention of a large audience for a few hours, in such a way that the audience remembers long afterwards what the comedian said.
Given
Successful stand-up comedians are able to keep the attention of a large audience for a few hours.
The audience remembers long afterwards what the comedian said.
In their routines, many comedians make interesting points about serious topics.
Humor is the means through which comedians are able to accomplish all of this.
University professors hope to achieve much the same in their lectures.
Evaluate
The conclusion indicator "thus" at the end of the argument tells us that the correct answer will be a conclusion supported by the given statements, a conclusion which uses the given statements as evidence. However, the question stem only asks for the answer that "most logically completes the argument." So, the correct answer doesn't need to be an airtight conclusion.
The evidence describes how successful stand-up comedians keep their audiences engaged. It also contains a statement of causation: Since university professors want to accomplish the same result in their lectures, it makes sense for the argument to conclude that professors can likewise use humor to achieve that result. This would be a conclusion based on reasoning that a similar cause can produce a similar result.
Goal
We'll look for an answer which indicates that university professors can use humor in their lectures. Beware of answers that bring in ideas which seem related but actually go beyond the scope of the evidence. Also beware of answers which express unsupported relationships between the concepts in the evidence, and ones that are actually contradicted by the evidence.