Essayist: The historical figures that we find most engaging are very rarely those who are morally most virtuous.
Conclusion (Thus)
Moral virtue is not among the characteristics that we admire most.
Evidence (Since)
The people who lives we would most like to live are those whose characteristics we admire most.
The historical figures we find most engaging are usually not the most virtuous.
Evaluate
Whenever we see a conclusion on an Assumption question, it's good to ask ourselves whether the ideas in the conclusion were discussed / defined in the evidence.
This conclusion is talking about Moral Virtue and What We Admire Most. Are either of those new, or are they both discussed in the evidence?
The "since" premise talks about What We Admire Most. We most admire whatever characteristics belong to the people whose lives we'd most like to live.
If you'd love to live Jay-Z's life, then the characteristics Jay-Z has are the ones you admire most. The conclusion is saying that , so in this example the author would be assuming that "moral virtue is not one of Jay-Z's characteristics".
Did the argument ever talk about Moral Virtue?
Yes, in the first sentence. The first sentence tells us that the historical figures we find most engaging are usually not the most morally virtuous. If George Washington is one of the historical figures we find most engaging, then he probably wasn't the most morally virtuous.
Okay, we have a conclusion about Moral Virtue and Most Admire.
In the evidence, each of those ideas is linked to a 2nd concept: Moral Virtue: less likely to be found in historical figures we find most engaging Most Admire: the characteristics of people whose lives we'd love to live
So we can anticipate that the correct answer will be linking those two 2nd concepts.
It sounds like the author is assuming that the people whose lives we'd love to live the most are the historical figures we find most engaging. That's how she could connect moral virtue and most admire.
We most admire the traits of the people whose lives we want to live. (The people whose lives we want to live are the historical figures we find most engaging). The historical figures we find most engaging weren't particularly virtuous. So, the traits we most admire don't include being particularly virtuous.
Goal
Since this argument involved symbol repetition ("admire most" and "moral virtue" were each deployed twice), it's very high probability this is testing a Linking assumption, and the missing link we found was between
"people whose lives we most want to live" and "historical figures we find most engaging".