There are six textbooks: three introductory and three advanced.
Introductory: F, G, H
Advanced: X, Y, Z
Each textbook will be evaluated once by the editor, Juarez, and once by the publisher, Rosenberg, during six consecutive weeks and each individual evaluates exactly one textbook per week.
J1: _ J2: _ J3: _ J4: _ J5: _ J6: _
R1: _ R2: _ R3: _ R4: _ R5: _ R6: _
What are the conditions?
1) Rosenberg cannot evaluate any introductory textbook until Juarez has evaluated that textbook. This means that J6 cannot be an introductory textbook and R1 cannot be an introductory textbook.
2) Juarez cannot evaluate any advanced textbook until Rosenberg has evaluated that textbook. This means that R6 cannot be an advanced textbook and J1 cannot be an advanced textbook.
3) Rosenberg cannot evaluate any two introductory textbooks consecutively. This means that Rosenberg must evaluate introductory textbooks in weeks 2, 4, and 6 and must evaluate advanced textbooks in weeks 1, 3, and 5.
4) Juarez must evaluate X during week 4. This means that Rosenberg cannot evaluate X during week 4 or during weeks 5 or 6 because Juarez cannot evaluate any advanced textbook until Rosenberg has evaluated that textbook. This means that Rosenberg must have evaluated X prior to week 4, either in weeks 1 or 3.
This is the set-up that we have from the conditions above:
J1: I J2: _ J3: _ J4: X J5: _ J6: A
R1: A/X R2: I R3: X/A R4: I R5: A R6: I
While it is true that Rosenberg evaluates an advanced textbook in week 5, E cannot be the correct answer choice because the conditions dictate that Rosenberg must evaluate textbook X during either week 1 or week 3.
D is the correct answer as Rosenberg must evaluate an introductory textbook during week 2. The only condition impacting this is that Juarez must evaluate H in week 1 which is possible based on the set-up and conditions outlined above.
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