This question is asking you to determine the type of reasoning used by the argument, and then find the answer choice which matches that. To start, let's break down the argument.
Premise: Cities with healthy economies tend to have lots of job openings. Premise: Cities with high-tech business tend to have healthy economies. Conclusion: Those in search of jobs should move to a city with high-tech businesses.
Then, try to see if you can see what type of reasoning the argument is using. Here, they are combining the two premises to reach the conclusion. However, the argument also forgets that its possible that the cities without high-tech businesses could also have healthy economies.
Answer Choices: (A) is incorrect. This answer choice does not link the two premises as the argument does.
(B) is incorrect. The premises are not connected here. Having "plenty of antiques for sale" does not mean those antiques are valuable.
(C) is correct. This answer choice breaks down to: Premise: Antiques with their ages authenticated tend to be valuable. Premise: Antique dealers generally carry antiques with their ages authenticated. Conclusion: Collectors who want valuable antiques should purchase them from dealers.
This conclusion connects the two premises in the same manner as the argument above. Additionally, it exhibits the same flaw in reasoning in that it assumes that no seller other than antique dealers sells authenticated-age antiques.
(D) is incorrect. This conclusion does not match the one in the stimulus. The stimulus uses a "should" recommendation for the conclusion, which is not the case here.
(E) is incorrect. The conclusion here fails to connect the two premises.