1 : If the parachutes had failed to open P : the whole of his couch would Q : he could have pulled a liver to provide an emergency ejection R : and special parachutes would have unfolded S : then have been fired from the cabin 6 : to bring him down. The Proper sequence should be:

Answer: Option B

If the parachutes had failed to open he could have pulled a liver to provide an emergency ejection the whole of his couch would then have been fired from the cabin and special parachutes would have unfolded to bring him down.