Read the excerpt below and answer the question. It didn't take me long to make up my mind that these liars warn't no kings nor dukes at all, but just low-down humbugs and frauds. But I never said nothing, never let on; kept it to myself; it's the best way; then you don't have no quarrels, and don't get into no trouble. If they wanted us to call them kings and dukes, I hadn't no objections, 'long as it would keep peace in the family; and it warn't no use to tell Jim, so I didn't tell him. If I never learnt nothing else out of pap, I learnt that the best way to get along with his kind of people is to let them have their own way. (p.121)

In the passage above, Huck gives the reader the idea that something is going to happen with the duke and the Dauphin. What is this literary technique called?

alliteration
foreshadowing
social responsibility
satire