The correct answer is 1. An indwelling catheter, also known as a Foley catheter, is a medical device used to drain urine from the bladder when a person is unable to do so independently. It consists of a flexible tube inserted into the bladder through the urethra and a small balloon inflated within the bladder to hold the catheter in place. The indwelling catheter allows urine to flow out of the bladder and into a drainage bag. The catheter should be secured below the bladder level with care to avoid tube compression or causing a tripping hazard.