Final answer:
Fertilization is the process that occurs in the uterine tube when a sperm cell enters an egg post-ovulation. This event leads to the formation of a zygote, which then travels to the uterus for implantation. The correct option is a. Fertilization.
Step-by-step explanation:
The process that occurs in the uterine tube, also known as the fallopian tube, is fertilization. Fertilization typically happens when a sperm cell successfully meets with and enters an egg cell after ovulation, which is the release of the egg from the ovary.
Once the egg is released, it is swept into the fallopian tube by the fimbriae. If sperm is present in the fallopian tube, it can fertilize the egg within a few days following ovulation. The fertilized egg, now called a zygote, begins its journey towards the uterus where it can implant and develop into an embryo.
Neither menstruation, which is the shedding of the uterine lining, nor implantation, which happens in the uterus, occurs in the fallopian tubes.