一道逻辑题 求这类题目的做法 谢谢各位啦

A3.     As part of our program to halt the influx of illegal immigrants, the administration is proposing the creation of a national identity card. The card would be available only to U.S. citizens and to registered aliens, and all persons would be required to produce the card before they could be given a job. Of course, such a system holds the potential, however slight, for the abuse of civil liberties. Therefore, all personal information gathered through this system would be held strictly confidential, to be released only by authorized personnel under appropriate circumstances. Those who are in compliance with U.S. laws would have nothing to fear from the identity card system.

In evaluating the above proposal, a person concerned about the misuse of confidential information would be most interested in having the author clarify the meaning of which of the following phrases?

(A) “all persons” (line 5)

(B) “however slight” (line 7)

(C) “civil liberties” (line 8)

(D) “appropriate circumstances” (line 11)（D）

(E) “U.S. laws” (line 2)

同意楼上的说法，感觉D更加需要明确，因为题目说的是担心被个人信息滥用，当然应该明确什么条件下能用。