The answer is d. honor.
Brutus was swayed by Cassius to join the conspirators. Brutus agreed because he felt that this would
bring back the Republic to its former glory.
Instead a war was fought and the conspirators were all killed including
Brutus.
The common theme is that of majority rule.
The majority of the great American foundational political documents involve some form of Democracy and a lot of majority rule. This ensures that there is always consensus for moving forward on a topic and that change happens with consensus and incrementally.
They can cause mud flow: in fact, in a famous volcano eruption in Chile in 1985 this is what caused the majority of the deaths .
Volcanic eruptions can also cause earthquakes, but very mild ones; the ones we hear about are usually caused by tectonic movement, not volcanic eruptions.
This was part of the conscience of Huckleberry Fin.