Debes usar un elemento a para vincular a los términos y condiciones. <fieldset> <label for="personal-account"><input id="personal-account" type="radio" name="account-type" /> Personal Account</label> <label for="business-account"><input id="business-account" type="radio" name="account-type" /> Business Account</label> <label for="terms-and-conditions"><a href="https://www.freecodecamp.org/news/terms-of-service/"><input id="terms-and-conditions" type="checkbox" required/></a></label> </fieldset>
<fieldset> <label for="personal-account"><input id="personal-account" type="radio" name="account-type" /> Personal Account</label> <label for="business-account"><input id="business-account" type="radio" name="account-type" /> Business Account</label> <label for="terms-and-conditions"><input id="terms-and-conditions" type="checkbox" required/></label> </fieldset>