Final answer:
The space between the posterior wall of the uterus and the anterior surface of the rectum is known as the rectouterine pouch.
Step-by-step explanation:
The correct answer to the question is A) rectouterine pouch. This is a pocket formed between the posterior wall of the uterus and the anterior surface of the rectum. It is also known as the pouch of Douglas and is the lowest point of the peritoneal cavity in females. The rectouterine pouch is clinically significant as it can accumulate fluid, such as blood or pus, which can indicate various medical conditions.