By definition, the answer is D. Rent seeking behavior is kind of
like what it sounds like. It involves entities attempting to
acquire an monopolistic privileges by obtaining things like land or
diamond mines (so only they can produce diamonds because there are
only so many diamond mines in the world) or they can try to use the
government by getting laws passed (like a law that says everyone
must buy Progressive auto insurance) or really any way that they
can eliminate competition is rent seeking.
In a monopoly, monopolists have already eliminated the competition
so they used price discrimination to acquire economic rent. In
perfect competition, price discrimination can actually increase
consumer welfare but in a monopoly this effect is reversed.
| restricting competition by way of engaging in non-competitive
behaviors |