public static function get_option( $option_name, $default = '' ) {
		if ( ! $option_name ) {
			return null;
		}
		$options = self::get_options();

		$option = $default;
		if ( array_key_exists( $option_name, $options ) ) {
			$option = $options[ $option_name ];
		} elseif ( is_multisite() && isset( self::$tribe_events_mu_defaults ) && is_array( self::$tribe_events_mu_defaults ) && in_array( $option_name, array_keys( self::$tribe_events_mu_defaults ) ) ) {
			$option = self::$tribe_events_mu_defaults[ $option_name ];
		}

		return apply_filters( 'tribe_get_single_option', $option, $default, $option_name );
	}