Explanation
Michele and Alvaro disagree on the topic of companies overhauling their databases. We are asked to name what specifically they disagree on.
A. The argument isn’t about the reasons for considering an overhaul, but about the advisability and approach to database overhauls.
B. Alvaro doesn't directly address Michele's point about the balance of problems versus rewards; instead, he speaks to the cause of problems and the importance of proper recoding.
C. The type or scale of database overhauls isn't the subject of their disagreement.
D. (Correct Response) Michele and Alvaro's disagreement is about what a company should do when considering a database overhaul. Michele advises caution and suggests thinking twice before proceeding, indicating skepticism about the benefits. In contrast, Alvaro's advice is to ensure the job is done correctly, indicating a divergence on focus.
E. The necessity of professional experience for recoding a database is not the focus of their disagreement.
The central point of contention is option D, with Michele advocating for caution due to potential problems and Alvaro advocating for proper execution.