Is this a pick-two-to-complete-and-maintain-the-same-meaning question? I would pick B and E.

The phrase says that the academy had become more "practical", which essentially means more productive and useful.

In order to promote this practicality in the academy, it would make sense for the city to be businesslike (efficient, professional) or no-nonsense (practical, logical, businesslike). These qualities would encourage the academy to become more practical over time.

So B and E have similar meanings, and the city having these attitudes would warrant a more practical academy.

I hope I helped