Final answer:
The canine cervix is located between the vagina and the body of the uterus, known for its role in facilitating sperm movement and serving as a passageway during birth.
Step-by-step explanation:
The canine cervix is located between the vagina and the body of the uterus. The cervix is the narrow, inferior portion of the uterus that projects into the vagina. It functions as a barrier or a transport medium through its mucus secretions. During the menstrual period, the cervix produces mucus that can facilitate sperm movement through the reproductive tract, allowing semen deposited in the vagina to enter the uterus. Additionally, the cervix serves as a passageway for a baby during birth.
In answering the original question, we can conclude that the correct option is C: vagina and the body of the uterus.