Official Solution:
[b]As part of continuing efforts to control illegal immigration, the US government should institute a system of internal passports similar to those in European nations. Drivers’ licenses currently serve a kind of internal-passport function, but this system is severely limited because not all states require the same documentation before issuing the drivers’ licenses.
Illegal workers can get a driver’s license in one state with lax regulations and use it as identification in another state with stricter regulations but better-paying jobs. Internal passports will keep illegal workers from slipping through the cracks by standardizing forms of photo ID.
Which of the following roles are played by the two bold faced portions in the argument?
[/b]
A. The first one is evidence to show a weakness of a system and the second one is the weakness.
B. The first one is the premise for the main conclusion of the argument and the second one is the main conclusion.
C. The first one is the main conclusion of the passage and the second one is an objection to that conclusion.
D. The first one introduces a judgment that the argument presents and the second one is a supporting presumption leading to the judgment.
E. The first one is an objection that the argument rejects and the second one is a claim provided to support the objection.
The argument blocks of the passage are as follows:
1. Background information #1: Drivers’ licenses currently serve a kind of internal-passport function.
2. Background information #2 and Premise #1: not all states require the same documentation before issuing drivers’ licenses.
3. Intermediate conclusion (conclusion #1) from premise #1: this system is severely limited… Illegal workers can get a driver’s license in one state with lax regulations and use it as identification in another state with stricter regulations but better-paying jobs.
The above is also Premise #2 leading to the main conclusion of the passage (conclusion#2). The bold face portion above is a presumption leading to a judgment in the main conclusion (see point 4 below).
4. Main conclusion (conclusion #2): As part of continuing efforts to control illegal immigration, the US government should institute a system of internal passports similar to those in European nations…. internal passports will keep illegal workers from slipping through the cracks by standardizing forms of photo ID.
The bold faced portion above is a judgment, a part of the main conclusion of the passage, which follows from a statement in premise #2.
Thus the argument flow is as follows:
Premise#1 → Conclusion#1 which is also the Premise#2 → Conclusion#2.
A. It is true that the second bold face shows a weakness, but the first bold face portion is not evidence to show that weakness - it is a part of the main conclusion of the passage, a proposal.
B. The direction of logic is reversed in this option. The conclusion is described as premise and vice versa.
C. The first bold face is indeed a part of the main conclusion, but the second bold face is not an objection (or a counterclaim) to the main conclusion; it rather supports the main conclusion.
D. CORRECT. The first bold faced portion is a judgment, a part of the main conclusion of the passage, which follows from the second bold face portion, a presumption in the premise leading to the main conclusion.
E. It is correct that the second bold face portion supports the first bold face, but the first bold face is not an objection that the argument rejects; rather the first bold face portion is a part of the main conclusion of the argument.
Answer: D