When individual students are all treated equally in that they have ide

Must Be True. The correct answer choice is (A)

There are two main points in the stimulus:

(1) individual students will learn differently from the same curriculum material; and

(2) some students will need different help than others to master a curriculum.

There are other, smaller pieces of information conveyed, including about what experienced teachers know and the nature of individual student learning, but those are smaller points than the two main ideas above.

Answer choice (A): This is the correct answer choice, as it nearly repeats statement (2), above. Different help is, by definition, unequal treatment. Again, do not let your opinion about "unequal treatment" lead you away from this choice. As soon as two students are treated in any differing way, the treatment is immediately "unequal" (which isn't to say "bad," but to instead just mean "different").

Answer choice (B): this answer is made more difficult to understand because the test makers insert a definition into the middle of the answer, which is an intentional distractor. When we remove that definition, the answer choice boils down to: "The rate and quality of learning depend on the quantity of teaching an individual student receives in any given curriculum." In other words, the more teaching you get, the better and faster one learns. This is a sentiment that most people in the real world would largely agree with, but is it proven by the just the statements given above in the stimulus? No, because the stimulus focuses on different types of help, which may include more help but doesn't necessarily have to be more help. Consequently, we cannot definitively draw this answer as a conclusion.

Answer choice (C): This answer reflects a belief commonly held in the real world, but there is nothing in the stimulus that indicates that more experienced teachers cause a student to learn more. We do know experienced teachers understand that students need different types of help, but this implies nothing of whether the experienced teachers are better than others at giving it (or being successful at it; there could be many new teachers equally well able to convey knowledge as an experienced teacher).

Answer choice (D) cannot be true. Statement (2) says that students need different exposure.

Answer choice (E) places a value judgment on what teachers should do. While many people would agree with this statement, like choices (B) and (C), it does not fall from the premises.