It's the last one. "Propaganda convinces people to reconsider their beliefs and actions."
Explanation:
Propaganda typically is about trying to convince others (through signs, texts, etc...) that a certain side is wrong. It's normally more harmful and made-up than helpful.
The son had showed his father a match. Whenever he lit the match, it filled the entire room with light, yet it was still small enough to fit into his pocket.
