18. (E)
Question Type: Inference (52-56)
The wording of this question makes it a bit more difficult to understand our task. "Would not be illegal" can simply be reworded to "legal". Often the LSAT will use negated language to confuse us. So, we can say that we are looking for something that the Romans would consider illegal but the Canadians and Americans would consider legal.
Let’s start by first going through the answer choices and eliminating the actions that would be illegal under Canadian and U.S. common law as well as the actions that we do not have enough information to determine whether or not they would be illegal.
We do not have enough information to determine the legality of (A) or (C). Eliminate both! Beware of using outside information! Although you may know (A) and (C) are illegal in the "real world" they are not specified as illegal (or legal) in the LSAT world.
The rest would all be legal under Canadian and U.S. common law. Now we have to find the one that would be illegal under Roman law.
It isn’t too far of a leap to believe that public authorities would have an interest in having (B) and (D) revealed. Therefore, these actions would fit the Classical Roman law exception and wouldn’t be illegal. Eliminate.
This leaves us with (E), which is our correct answer. The public authorities would most likely not want someone to reveal to the public something negative about one of their own. Couldn’t this look poorly on all of them? We know that what public authorities think are important to Classical Roman law (lines 52-56), so therefore it isn’t too far of a leap to infer that this action would be illegal.