Final answer:
The trigone is a smooth connective tissue region in the urinary bladder that helps regulate the flow of urine. Hence the correct option is C.
Step-by-step explanation:
The trigone is a triangular-shaped area at the base of the bladder formed by the two ureteral openings in the posterior-lateral aspect and the urethral orifice in the anterior aspect. It is marked by these three points, resembling a triangle.
The trigone is a smooth connective tissue region in the urinary bladder. It is lined with transitional epithelium, which allows for expansion and stretching as the bladder fills with urine. The trigone helps regulate the flow of urine from the bladder through the urethra.The correct answer is (c) a smooth connective tissue region in the urinary bladder.