17. (A)
Question Type: Inference (1-2, 18-19, 25-26)
We need something that is true of the systems in Passage A but not B. So what’s the big difference between them? Let’s utilize our scale! The author of Passage A believes blackmail should be illegal through its own special category, while the author of Passage B thinks this is unnecessary.
One effective approach is to first eliminate answer choices that are not true under U.S. and Canadian common law.
(C) is a contradictory interpretation. The laws pertaining to blackmail are not meant to be enforced precisely as written. This is clearly stated in lines 18-19.
(E) is a contradictory interpretation. Canadian and U.S. common law do have a special category pertaining to blackmail. This is made evident in lines 1-2.
We are left with (A), (B), and (D), all of which are true under Canadian and U.S. common law. (A) is supported in the first paragraph of Passage A. (B) is supported by the last paragraph of Passage A. (D) is supported in lines 25-26.
Now our task shifts to finding which of these answer choices would not be true under Classical Roman law.
(B) is an unsupported interpretation. Where in Passage B does it imply Classical Roman law would consider blackmail a non-triangular structure? It doesn’t. Eliminate!
(D) is another unsupported interpretation. Passage B does not specify who blackmail victims pay and don’t pay to avoid being harmed.
(A) is the correct answer. Passage B clearly states that Classical Roman law was first concerned with harm rather than legality.