19. (A)
Question Type: Strengthen the Conclusion
What candidates promise before they are elected and what they actually do once they are elected are sometimes two very different things. In order for the conclusion to hold, the author must assume that campaign promises will be kept (the government will intrude by raising taxes). The argument will be strengthened if this assumption is made explicit. Answer (A) does this.
(B) is the exact opposite! It weakens the argument.
(C) is out of scope (most common problems?).
(D) is out of scope (a comparison of democratic systems versus non-democratic systems?).
(E) is also out of scope. We don’t care what happens to politicians who promise to do what they actually believe ought to be done. The passage clearly states that politicians who promise to help voters are the ones who get elected. What matters is whether they keep these promises, NOT whether they believe in these promises.
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