Answer:
Someone takes over to help oppressed people.
An oligarchy is not only when only one person make rules and laws. They are usually rich and wealthy people.
In an oligarchy, you are not born into positions.
No one would take over to help people they know in need.
And, finally, in an oligarchy, power doesn't come from wealth. A poor person can even turn into an oligarch.
The answer is A, hope it helps!
