Answer: Fallopian tube (oviduct).
- A Uterus, in the upper region near the fundus
- B Ovary, immediately after the follicle ruptures
- C Fallopian tube (oviduct)
- D Vagina, near the external os of the cervix
Correct answer: C. Fallopian tube (oviduct)
Explanation: Fertilization normally occurs in the fallopian tube (oviduct), specifically in the ampulla (upper third). The egg is released from the ovary and fertilized within 12-24 hours of ovulation.

The human male reproductive system: sperm formed in the testis mature in the epididymis and travel via the vas deferens, mixing with secretions of the seminal vesicle, prostate and bulbourethral glands. Image: Wumingbai, CC BY-SA 4.0, via Wikimedia Commons.
Concept context
Male and female reproductive systems, gametogenesis, fertilization, implantation, pregnancy, and reproductive health.