When humanism spread and affected literature authors and dramatists began writing about

ASinful practices
BVarious gods and goddesses
CBiblical tenets
DHuman psychology

Verified Answer :

When humanism spread and affected literature, authors and dramatists began writing about D) human psychology.
Humanism was the period of heightened awareness of humans, and their qualities, and not religion and church like in the previous eras. 

PBCHEM

ANSWER: D. Human psychology

EXPLANATION: When Humanism spread and affected, everyone started to write about Human Psychology to teach a person's worth, his personal freedom, happiness, development and abilities. It was the period of heightened awareness of humans and not religion or church.