);

		return array(
			'attempt_key'    => $attempt->get_key(),
			'html'           => $html,
			'question_id'    => $question_id,
			'total'          => $attempt->get_count( 'questions' ),
			'question_ids'   => $question_ids,
			'can_be_resumed' => $attempt->can_be_resumed(),
		);
	}

	/**
	 * AJAX Quiz get question.
	 *
	 * @since 7.8.0
	 *
	 * @param array $request $_POST data.
	 * @return WP_Error|array
	 */
	public static function quiz_get_question( $request ) {
		$err = new WP_Error();

		$student = llms_get_student();
		if ( ! $student ) {
			$err->add( 400, __( 'You must be logged in to take quizzes.', 'lifterlms' ) );
			return $err;
		}

		$required = array( 'attempt_key', 'question_id' );
		foreach ( $required as $key ) {
			if ( empty( $request[ $key ] ) ) {
				$err->add( 400, __( 'Missing required parameters. Could not proceed.', 'lifterlms' ) );
				return $err;
			}
		}

		$attempt_key     = sanitize_text_field( $request['attempt_key'] );
		$question_id     = absint( $request['question_id'] );
		$student_quizzes = $student->quizzes();
		$attempt         = $student_quizzes->get_attempt_by_key( $attempt_key );

		// Don't allow the question to be retrieved if the attempt is not open or can't be resumed.
		if ( ! $attempt || ( ! $attempt->get_quiz()->is_open() && ( ! $attempt->get_quiz()->can_be_resumed() || ! $attempt->can_be_resumed() ) ) ) {
			$err->add( 500, __( 'There was an error retrieving the question. Please return to the lesson and try again.', 'lifterlms' ) );
			return $err;
		}

		$access_check = self::verify_quiz_access( $student, $attempt->get( 'lesson_id' ) );
		if ( is_wp_error( $access_check ) ) {
			return $access_check;
		}

		$question_id = $attempt->get_question( $question_id );

		if ( ! $question_id ) {
			$err->add( 404, __( 'Cannot find the requested question id. Please return to the lesson and try again.', 'lifterlms' ) );
			return $err;
		}