For years, U.S. employers have counted on a steady flow of labor from

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1.(A) CORRECT. The passage states several times that Mexico’s population growth is diminishing due to the country’s declining birth rate. However, the passage never
suggests that Mexico’s population itself is diminishing.
(B) The third paragraph states that, on average, a Mexican woman had just fewer than seven children in 1968. Today the average number of children born to a
Mexican woman is slightly more than two, or approximately one-third of the 1968 figure.
(C) The first paragraph states that U.S. employers are still counting on a steady flow of labor from Mexico. To reinforce this contention, the final sentence of the first
paragraph says this flow might “one day” diminish, indicating that at present it is continuing.
(D) The final paragraph states that Mexico’s population is aging. This aging of the population naturally results from the declining number of babies born in Mexico. As
fewer babies are born, the average age of the population gradually increases.
(E) The third and final paragraphs indicate that a healthy middle class in Mexico is a hope and a goal but that it is far from a foregone conclusion.

2.
The correct answer to an inference question must be directly supported by evidence from the text. The passage states that U.S. employers of Mexican immigrants often
provide low-skilled, low-paying jobs to individuals who "are often more than willing to work for wages well below both the U.S. minimum wage and the poverty line."

(A) No information is provided concerning the amount of money paid to American citizens. It is possible that there are many Americans who also work for wages well
below both the U.S. minimum wage and the poverty line.
(B) CORRECT. If some of these immigrant workers are accepting wages “well belowthe U.S. minimum wage,” their American employers must be violating wage laws (i.e.
paying wages below what the U.S. minimum wage requires).

3.
(E) CORRECT. In the final paragraph, the author indicates that "the growth of a healthy middle class is far from a foregone conclusion. The critical challenge for
Mexico is what it does with the next 20 years.” Then, the author indicates the steps that Mexico must take. Thus, the author obviously believes that Mexico does not
currently have the infrastructure to develop a healthy middle class. The key, for the author, is whether Mexico is willing and able to build this infrastructure.

4.
The final paragraph primarily explains why the development of a healthy middle class, an important factor in limiting the desire of many Mexicans to migrate to the
United States, is not a foregone conclusion.
(C) CORRECT. The final paragraph explains that Mexico must take specific actions to foster the development of a healthy middle class. Without a healthy middle class,
the author believes that large numbers of Mexicans will continue to seek work in the United States.