HTML/PHP form question. How to hide a form item until a radio button is selected?

michaelnaeseth

New member
Question X on my form is a radio group that has 3 possible choices. If the customer picks option 2, I need to have a drop-down box appear that has 3 options. How do I accomplish this? I would like the drop-down box to be hidden until the customer selects option 2.
 
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