The two oviducts in a human female unite in a elastic bag like structure known as

The correct option is B

Uterus

The correct option is B.

Explanation of the correct option:

1. Oviducts are the part of female reproductive structure.
2. The uterus is the elastic bag-like part of the female reproductive system where implantation occurs.
3. A pair of oviducts unite in an elastic bag uterus.

Explanation of the incorrect options:

Option A:

The vagina is the part of the female reproductive system which imparts in the process of sexual intercourse.

Option C:

The fallopian tube (Oviduct) is the site of fertilization in the female reproductive system.

Option D:

Cervix is the joining portion of the Uterus and Vagina.

Final answer:

The two oviducts in a human female unite in an elastic bag-like structure known as Uterus.