The part of the excretory system is labeled C is bladder.
What is the bladder?
The bladder is a flexible organ, with muscular walls, located in the pelvis. Its main function is to store urine before it is eliminated from the body. Urine is produced by the kidneys and conducted to the bladder through the ureters. During urination, the muscles of the bladder contract and urine is eliminated through the urethra.
so in this case, the image above deals with the urinary system where the marked part is the bladder.
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