No one with a serious medical problem would rely on the average person to prescribe treatment.
Facts
No one with a bad medical issue would trust the average person to prescribe treatment. And since a good public servant has the interest of the public at heart ...
Evaluation
Huh? Whenever we see "similarly", we will usually be dealing with an analogy, and LSAT likes to make us Complete the Analogy. But here I think we need to do a little mental effort to figure out how these things will line up. In the first case, the author is saying, good public servantif we have a serious public interest problem, we should rely on a good public servant rather than the average person".
Goal
Hard to guess this one, but look for something safely worded that seems to complete an analogy between the medical problem case and the good public servant case.