magento-test/app/code/Magento/Checkout/Test/Mftf/ActionGroup/StorefrontSelectOptionRadioButtonActionGroup.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
    <actionGroup name="StorefrontSelectOptionRadioButtonActionGroup">
        <annotations>
            <description>DEPRECATED. Please use StorefrontProductPageSelectRadioButtonOptionValueActionGroup instead. Checks the provided Product Option radio button for the provided Product Option Price on a Storefront Product page.</description>
        </annotations>
        <arguments>
            <argument name="optionTitle" defaultValue="ProductOptionRadiobutton"/>
            <argument name="optionPrice" defaultValue="ProductOptionValueRadioButtons2"/>
        </arguments>

        <checkOption selector="{{StorefrontProductInfoMainSection.productOptionRadioButtonsCheckbox(optionTitle.title, optionPrice.price)}}"  stepKey="SelectOptionCheckBox"/>
    </actionGroup>
</actionGroups>