Darius did, however, ask who the Athenians were, and after receiving the answer, he called
for his bow. This he took and, placing an arrow
on it, shot it into the sky, praying as he sent
it aloft, “O Zeus, grant me vengeance on the
Athenians."
Then he ordered one of his servants to say
to him three times whenever dinner was set
before him, “Master, remember the Athenians."

What does this description of Darius I reveal about him?

This description tells us that he was vengeful and resentful.

Explanation:

Darius ruled the greatest empire in the world at the time and believed that no one could and no one should oppose him.

But when Athenians started supporting Ionian rebellion he couldn't believe that there is someone who will directly oppose him like that.

That is why he wanted to be remembered about what the Athenians did, so that he could take his vengeance on them.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

the answer to this question is the third option. hope this