For Mac OS users, there is a system setting that may not allow you to tab onto several types of elements in a web page. To change this setting:
For breakfast students must chose 3 of the 4 items. 1 of them has to be a 1/2 cup fruit.
For lunch students must chose 3 of the 5 items. 1 of them has to be 1/2 cup fruit vegetable.