**Core Concept**
The fertilized ovum, now a zygote, undergoes several cell divisions and travels through the fallopian tube towards the uterine cavity. This process is known as implantation, where the zygote attaches to the endometrium, the inner lining of the uterus.

**Why the Correct Answer is Right**
The zygote is propelled by ciliary action and peristalsis of the fallopian tube, which aids in its journey towards the uterine cavity. The process of implantation is crucial for the development of the embryo and the establishment of a successful pregnancy.

* The correct answer is related to the movement of the fertilized ovum through the fallopian tube.
* The fertilized ovum reaches the uterine cavity through the process of ciliary action and peristalsis of the fallopian tube.
* Implantation is a critical step in establishing a successful pregnancy.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not the primary mechanism by which the fertilized ovum reaches the uterine cavity.
**Option B:** Incorrect because it is not the correct term for the process by which the fertilized ovum reaches the uterine cavity.
**Option D:** Incorrect because it is not directly related to the movement of the fertilized ovum through the fallopian tube.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that the fertilized ovum undergoes rapid cell divisions as it travels through the fallopian tube, and implantation occurs when the zygote attaches to the endometrium.

**Correct Answer:** C. Tubal peristalsis and ciliary action.