Step 1: Understanding the inguinal canal.
The inguinal canal is a passage in the lower abdominal wall through which the testes descend into the scrotum during fetal development.
Step 2: Analyzing the options.
(A) inguinal canal: Correct, the inguinal canal connects the abdominal cavity to the scrotal sacs.
(B) iter: Incorrect, the iter is a term used for a passage, but it does not connect the abdominal cavity to the scrotum.
(C) gubernaculum: Incorrect, the gubernaculum is a structure that helps guide the descent of the testes but is not the passage itself.
(D) ejaculatory duct: Incorrect, the ejaculatory duct is part of the male reproductive system but does not connect the abdominal cavity to the scrotum.
Step 3: Conclusion.
The correct answer is (A) inguinal canal, as it connects the abdominal cavity with the scrotal sacs.