The organ in the excretory system that has a function similar to that of the esophagus in the digestive system is the ureter.
The esophagus transports food from the mouth to the stomach, while the ureters transport urine from the kidneys to the bladder. Therefore, among the options provided, if "ureter" is not explicitly listed, the best choice related to a similar transport function might be the bladder (though it serves as a storage organ, it does not have a direct transport function like the ureter).
If the answer options were “A. Eureka, B. Kidney, C. Cure, D. Bladder,” none of them precisely match; however, based on the intended comparison, the ureter would be the correct answer if included.