Answer:
I believe it is D, a split infinitive
Answer: In a nutshell, the medieval Italian philosopher asserted that a good leader: Should be feared rather than loved “if you cannot be both” in order to avoid a revolt. Should have the support of the people because it's difficult to take action without their support. Should hold good virtues.
Can you put lines 17-31 so we can read them
Answer: She/Practice
Explanation: It’s She/Practice because it fits the subjunctive mood. Plus I just got it right on my class