TIP: Create a "Pick One" Question with Multiple Correct Answers

A "pick one" question allows only ONE correct answer. Well, that's the point of "pick one."

But suppose you want users to identify an object in an image, and the image includes more than one of those objects? 

For example, suppose you want to test whether someone could pick out any blue shape in an image that included 2 blue squares plus 6 squares of other colors. Like this: 

The attached Storyline file shows how to set up a "pick one" question that does allow more than one correct answer. 

The trick is having the on-slide selections control the actual "pick one" buttons, which are off the slide. 

This is just one example of how useful off-slide items can be!