Which is a quality of a hero in a Greek myth?

being safe

showing kindness

seeking vengeance

being cruel

Well, It could be A or C since some heroes seek vengeance because something happened to them in the past or there village or town has had something Bad happen to them. But every hero must be kind to innocent people. They protect their people in their village. Take Beowulf for example, He ripped a troll's arm off, killed his mother, then died while battling with a dragon for his people, which he beat. Plus, the strength of thirty men in each arm adds even more to his heroism.

Seeking vengeance since in greek mythology someone is always seeking vangeance