Explanation:
In-vitro fertilization (IVF) is the incorrect option regarding artificial insemination.

Artificial Insemination:
Artificial insemination is a technique used to achieve pregnancy by introducing sperm into a woman's reproductive system through means other than sexual intercourse. It is often used in cases of male infertility, unexplained infertility, or when a woman wants to conceive without a partner.

Methods of Artificial Insemination:
There are two main methods of artificial insemination:

1. Intrauterine Insemination (IUI):
In IUI, the semen is introduced into the uterus artificially. This procedure is performed around the time of ovulation to increase the chances of fertilization. The sperm is prepared in the laboratory to remove any impurities and then inserted into the uterus using a catheter.

2. In-vitro Fertilization (IVF):
In IVF, fertilization occurs outside the body. The woman's eggs are extracted from her ovaries and fertilized with sperm in a laboratory dish. After fertilization, the resulting embryos are transferred back into the woman's uterus for implantation and pregnancy.

Explanation of Incorrect Option:
The incorrect option is "In-vitro fertilization (IVF)". IVF is not a method of artificial insemination but a separate assisted reproductive technology. Unlike artificial insemination, IVF involves the fertilization of eggs and sperm outside the body. The fertilized embryos are then transferred back into the uterus. IVF is a more complex and invasive procedure compared to artificial insemination.

Conclusion:
In summary, artificial insemination involves introducing sperm into a woman's reproductive system through methods like intrauterine insemination (IUI). In-vitro fertilization (IVF) is not a method of artificial insemination but a separate technique involving fertilization outside the body. Therefore, option 'D' is the incorrect answer.