Question: Of those person who became teachers in 1968 and who later left the profession, 30 percent today earn salaries above $35,000 a year: of those who became teachers in 1968 and have remained in the profession, only 15 percent today earn salaries above $35,000 a year. These figures indicate how underpaid teachers are today.

The argument above depends on which of the following assumptions about the persons for whom statistics are cited?

(A) At least one-third of the group of persons who have remained in teaching would today be earning more than $35,000 a year if they had left teaching.
(B) The group of persons who left teaching and the group who did not are comparable in terms of factors that determine how much people outside the teaching profession are paid.
(C) Most of those persons who left teaching did so entirely because of the low salaries teachers earn.
(D) As a group, those persons who have remained in teaching are abler and more dedicated than the group of persons who left teaching.
(E) The group of persons who left teaching and who today earn more than $35,000 a year were more capable teachers than the group who remained in the profession.

Answer: C
Explanation:

On the critical reasoning section of the GMAT, analytical and critical thinking skills are evaluated. Strong cognitive skills are required for the individual to respond coherently.

Only 15% of individuals who started working as teachers in 1968 and have stayed in the field now make more than $35,000 a year. Of those who started working as teachers in 1968 but later left the field, 30% do so today. These numbers demonstrate how poorly compensated teachers are nowadays.

Let's look at each option separately.

A: Incorrect
It is an incorrect choice. because of the fact that the sentence uses the phrase "one third of the people” as nothing can be said or assumed about the statement.

B: Incorrect
It is the wrong choice. The teaching and non-teaching poeple cannot be compared as given in the sentence.The salary earned by both kinds of people are not connected to their profession. Teachers who have retired are comparable to teachers who have not. If we reject that. We have another explanation for why these people are paid more because teachers who have gone are more skilled than those who have stayed. B must be assumed without fail for the argument's conclusion to hold up.

C: Correct
It is the correct choice. "Most of those folks who left teaching did not do so because of the poor income instructors get," must be the underlying premise if you reject it. The assertion that "These numbers show how underpaid teachers are now" consequently becomes invalid. Why would instructors leave the industry if the pay wasn't an issue?

D: Incorrect
It is an incorrect answer. The word “dedicated” makes the sentence problematic. It is also out of the scope of the given passage. Hence this choice is eliminated.

E: Correct
It is an incorrect answer. The word “capable” makes the sentence problematic. It is also out of the scope of the given passage. Hence this choice is eliminated.

“Of those person who became teachers in 1968 and who later left the pro” – is a GMAT Critical question. To answer the question, a candidate can either find a piece of evidence that would weaken the argument or have logical flaws in the argument. GMAT critical reasoning tests the logical and analytical skills of the candidates. This topic requires candidates to find the argument's strengths and weaknesses or the logical flaw in the argument. The GMAT CR section contains 10 -13 GMAT critical reasoning questions out of 36 GMAT verbal questions.

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