Help:Quiz example

<quiz display=simple> Which one of the following metals reacts most vigorously with cold water? |type="()"} - Copper || You can get some help if you wish. - Iron || You can get some help if you wish. - Magnesium || You can get some help if you wish. + Sodium || Correct! Sodium fizzes in water, and produces hydrogen very rapidly. - Zinc || You can get some help if you wish.