function llms_show_take_quiz_button( $lesson ) {

	// If a lesson has a quiz, show the button, otherwise don't.
	$show = $lesson->has_quiz();

	// if the lesson has a quiz make sure we can show the button to the current user.
	if ( $show ) {

		$quiz_id = $lesson->get( 'quiz' );

		// if the quiz isn't published and the current user can't edit the quiz don't show the button.
		if ( 'publish' !== get_post_status( $quiz_id ) && ! current_user_can( 'edit_post', $quiz_id ) ) {
			$show = false;
		}
	}

	// allow 3rd parties to modify default behavior.
	return apply_filters( 'llms_show_take_quiz_button', $show, $lesson );

}