Final answer:
Urinary tract obstructions like kidney stones can occur in the bladder, urethra, ureter, and in males, the prostate.
Step-by-step explanation:
Urinary tract obstructions, such as kidney stones, can occur in multiple locations within the urinary system. The correct options where these obstructions can occur are the bladder, urethra, ureter, and for males, the prostate can also be involved as it surrounds the urethra.
These stones can form in the kidney and travel down the urinary tract. If they are small enough, they may pass through the ureters to the bladder and then be expelled through the urethra. However, larger stones might become lodged along the way, commonly in the narrow passages of the ureters, or in the case of males, potentially at the prostate. The prostate, just below the bladder, can constrict the urethra due to its enlargement, thus affecting urine flow. The urethra is a shared component of the urinary and reproductive systems in males, and it carries urine out of the body from the bladder for both genders.