Answer:
Step-by-step explanation:
Since they do not have enough writers to create all of the books then the best option would be to focus on and create Prep for the Grad School Entry Test, Prep for the Law School Entry Test, and Prep for the Medical School Entry Test. This would be the best option since the Grad School Entry Test will prepare students of a wide range of different careers. On the other hand, the two hardest and longest careers are that of Law and Medical School which should get their own books in order for the students to be better prepared.