Disabled controls should have both the disabled attribute and aria-disabled="true"
<label for="language">Language</label>
<select name="language" id="language" disabled><option value="en">English</option><option value="de">Deutsch</option><option value="es">Español</option><option value="fr">Français</option><option value="hi-IN">हिन्दी (भारत)</option><option value="ja">日本語</option></select>