Final answer:
The client shows an understanding of the teaching on stress incontinence by committing to perform Kegel exercises regularly, thus recognizing the importance of strengthening pelvic floor muscles.
Step-by-step explanation:
The statement by the client that indicates an understanding of the teaching about stress incontinence is: I will perform Kegel exercises regularly. Stress urinary incontinence occurs when pelvic floor muscles are weakened, often as a result of childbirth. Kegel exercises are designed to strengthen these muscles, thereby improving symptoms of stress incontinence. On the other hand, drinking fluids before bedtime, increasing caffeine intake, and avoiding the bathroom when feeling the urge to urinate are not recommended practices as they might worsen the condition or have no beneficial effect on stress incontinence.