The first one is C and the second answer is C as well
Bowel incontinence is an inability to control bowel movements, resulting in involuntary soiling. It's also sometimes known as faecal incontinence. The experience of bowel incontinence can vary from person to person. Some people feel a sudden need to go to the toilet but are unable to reach a toilet in time.
The answer is the upper back muscles. Hope I helped!