VOTE: What was Keith's answer for Darren Maule's Quick Quiz?

We need your help with something that has been bothering us since 07: 23 when Darren Maule's quick quiz ended with contestant Keith. On Darren Maule's Quick Quiz, contestants have to answer five questions in 30 seconds in a bid to win R1000 cash. But of course, if the contestant does not win the money, the money carries over to the next day and R1000 is added each time. Today, our contestant Keith 'won' the quiz - or at least that is what some of us think. When question four was asked, "Which nut is used to make dynamite?"