This is easy, common denominators. Well you know denominators are at the bottom of a fraction, and you know common means the same, so it would be something like
a d
b = b
The ladder to political<span> power in the Roman Senate was different for the wealthy patricians ... The Roman concept of the citizen evolved </span>during the Roman Republic<span> and changed ... In Roman </span>society<span>, the aristocrats were known as patricians</span>
It is either c or a but I think it is c
