if you were speaking of a country it would be Roman Empire :)
The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The three civil service jobs that allow the president to do his job better could be the following. Administrative Assistant, Law Enforcement Officer, and Intelligence Analyst.
These are key civil service jobs that are key for the President of the United States and the members of his Cabinet. They are important because these can produce a series of measures and information that allow the President to make decisions. And if there is something the President must do is to make difficult decisions in critical times, that is why he needs the support of bright and loyal civil service workers.
Machiavelli describes three ways to hold states that have
been accustomed to living freely under their own laws. The first
is to devastate them. The second is for the conqueror to occupy
them. The third is to allow the state to maintain its own laws,
but to charge taxes and establish an oligarchy to keep the state
friendly. The third option is advantageous because the newly imposed
oligarchy will work hard to secure the authority of the conquering
prince within the conquered state because it owes its existence
to the prince and cannot survive without his support. Thus, as long
as the goal is not to devastate the other state, it is easiest to
rule it through the use of its own citizens.
Hope this helps, took me awhile to type it all. :)