easy
David's father has three sons: Snap, Crackle, and ?
Common Wrong Answers
“Pop”
Pop is a common name associated with the trio Snap, Crackle, and Pop, but the riddle specifically asks for the name of the third son, which is David.
“David's brother”
While it might seem reasonable that the third son could be referred to as David's brother, the riddle directly states that David is one of the sons, making this guess incorrect.
“Snapper”
Snapper is a play on the word Snap, but the riddle clearly indicates the third son's name is David, not a variation of Snap.