Checkout Option Block: Selections (Checkbox, Radio Button, Dropdown)
Adding selection options or list selections to the cart page is a common feature of online stores. There are three different Checkout Option Blocks that allow for list options to be built / displayed in different ways. Whatever data is selected to add to the order will be as an Additional Detail on the Shopify Order page.
Checkbox allows you to offer a single selectable input.
Radio allows you to add a list of custom options selectable via radio buttons.
Dropdown allows you to add a list of custom options selectable via a dropdown list.
Here is an example of how Radio button options would appear:

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Contact Support Add Checkout Options to the Checkout Page
Introduction to Checkout Options
Build a Checkout Options Set
Localization and Translation of your Checkout Options | Multiple Language Management
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Checkout Option Block: Selections (Checkbox, Radio Button, Dropdown)
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