In classical tragedy what causes the downfall or destruction of the hero?

1: The actions of the antagonist or villain

2:The hero's nobility and royal bloodline

3: The hero's personal defect in their lives

My choice is #2 is this correct?

No, 2 is not correct.

Okay then it has to be 3..thanks

In classical tragedy, the downfall or destruction of the hero is typically caused by a combination of factors. While all the options you provided can play a role, the most significant factor is usually the hero's personal defect or tragic flaw. This flaw is a negative character trait or quality that ultimately leads to the hero's downfall. Examples of such flaws include excessive pride (hubris), ambition, jealousy, or a lack of self-control.

The actions of the antagonist or villain can certainly contribute to the hero's downfall, but they are not usually the sole cause. The hero's nobility and royal bloodline, although they may contribute to the hero's stature, do not inherently determine their downfall.

Therefore, while option 2 (the hero's nobility and royal bloodline) can influence the hero's circumstances, option 3 (the hero's personal defect) is typically the primary cause for the tragedy in classical literature.