What type of setting is used when a character struggles deeply with the choices he makes?

a. psychological setting
b. physical setting
c. external setting
d. internal setting

this is what i put and it was correct

it's a way for authors to communicate with reader in this time period. books from the past can teach us about life.

in our power to make a world happy - to teach mankind the art of being so - to a character hitherto unknown - and to have, as it were, a new creation intrusted to our hands, are honors that command reflection, and can neither be too highly estimated,

this is hard!