<span>The correct answer is A. Air hose. That's because the air hose is elastic on its own and becomes firm when air goes through it. If you were carrying it by the hose, then if the gear malfunctioned and air started rushing through you wouldn't be able to control the device and it could hurt you or anyone near you as it would go rampant and you wouldn't be able to catch it.</span>
Yes, it is possible. There is something called a relapse. It is when you catch a sickness again after getting rid of the sickness and then it is twice as bad as the first time.
