Which of the following correctly describes events occurring in female reproductive organs in their proper order?
a. uterus—produces eggs; ovary—zygote implants; oviduct—fertilization occurs
b. uterus—produces eggs; oviduct—fertilization occurs; ovary—zygote implants
c. ovary—produces eggs; uterus—zygote implants; oviduct—fertilization occurs
d. ovary—produces eggs; oviduct—fertilization occurs; uterus—zygote implants

D. Ovary—produces eggs; oviduct—fertilization occurs; uterus—zygote implants

Explanation:

In the female reproductive system the events from the release of the ovum to implantation of zygote are as follow:

1. One of the two ovary release ovum which is caught by the finger-like projection called fimbriae which is part of the Fallopian tube and present close to the ovary.

2. The unfertilized ovum moves to the middle portion of the oviduct or fallopian tube where its fertilization takes place.

3. The fertilized ovum than moves into the uterus from the oviduct and gets implanted into the wall of the uterus and develop there.  

Therefore the correct answer is D.