do you see the checkbox-203, that’s the ID of this item, it has a meaning
because the user can select 3 options here, you’ll use this checkbox-203 to get the value that the user selected
so on your Mail tab of this plugin, where it says Message Body you can do something like that:
Category: [checkbox-203]
and if I selected “Shirts” for example, so on your email you will see
Category: Shirts