Answer:
For explaining the time period they took place in and their social class of the character I would say 3. Diction.
Step-by-step explanation:
Diction is the style of words or phrases a writer, speaker, or character uses when speaking or writing. The diction you use when speaking or writing should match the purpose or audience. In formal writing-essays, the diction-speech must be formal. Examples of Diction: Hey, what's up, man?