In rabbits, humans and other placental mammals, fertilization occurs in

The correct option is fallopian tubes.

Fertilization is the biological process where a male gamete (sperm) fuses with a female gamete (egg/oocyte) to initiate the development of a new organism.

In placental mammals, including rabbits and humans, the female reproductive system consists of several key structures, each with distinct functions:
1. Ovaries: These are the primary female reproductive organs responsible for producing and releasing mature eggs (ovulation). fertilization does not take place inside the ovaries.
2. Fallopian Tubes (Oviducts): After ovulation, the mature egg is released from the ovary and swept into the fallopian tube. The fallopian tube provides the ideal physiological environment for sperm and egg interaction. It is within the upper region of the fallopian tube (specifically the ampulla) that fertilization actually occurs.
3. Uterus (Womb): After fertilization occurs in the fallopian tube, the resulting zygote undergoes cell division to become a blastocyst. It then travels down the fallopian tube into the uterus, where it implants into the uterine wall for gestation.
4. Vagina: This is the canal that receives semen during copulation and serves as the birth canal, but fertilization does not happen here.

Thus, fertilization takes place in the fallopian tubes before the fertilized egg moves to the uterus for implantation and development.