the answer for apex is The widespread resentment in Germany toward the treaty of Versailles.
It adds emphasis to that phrase, and implies a deeper meaning
The answer for this question is option (B)- Understanding state regulations governing political parties.
A political party should understand every regulations in the state and its own efficiency in it. By understanding this process they political parties could possibly make use of the rule making, monitoring, and enforcement techniques to lead the state into a positive function.