The objective of the Congress was to provide a long-term peace plan for Europe by settling critical issues arising from the French Revolutionary Wars and the Napoleonic Wars.
The goal was not simply to restore old boundaries but to resize the
main powers so they could balance each other and remain at peace.
<span>From this link
https://www.adamsmith.org/the-wealth-of-nations/
it reads : "</span><span>For all these reasons, Smith believes that government itself must be limited. Its core functions are maintaining defence, keeping order, building infrastructure and promoting education"
</span><span>
So the answer in a short and simple way is:
maintaining defence, keeping order, building infrastructure</span>
The answer is D.the economic system was on the verge of collapsing
the prisoners will start to behave and become more useful to the community