What is the function of Copper-T?
A) Stops zygote formation
B) Checks mutation
C) Stops Obliteration of Blastocoel
D) Stops Fertilization

Hint: Intrauterine Device (IUDs) are contraceptive devices which are fitted inside the uterus and prevent implantation of ova, thereby preventing pregnancy.

Complete Answer:
Let us first know a little about birth control first. The various methods are,
- Natural birth control - It includes rhythm, continuous abstinence, etc.
- Barrier method- It includes condoms.
- Intrauterine devices - It includes copper IUD and hormonal IUD.
- Surgical methods- It includes vasectomy and tubectomy.
- Hormonal method- It includes birth control pills, vaginal rings, etc.

Option A: Copper-T plays no role in the zygote formation. Therefore, this is the incorrect option

Option B: Copper-T has no role to play in mutation. Therefore, this is the incorrect option.

Option C: Copper-T does not stop obliteration of blastocoel. Therefore, this is the incorrect option.

Option D: Copper T is defined as an intrauterine device which is commonly referred to as the copper coil containing copper. This device finds its applicability in several birth controlling measures and emergency contraception procedures within the first five days of undergoing a sexual intercourse. This device is implanted into the uterus lasting up to 12 years. Women of all ages can make the best use of this device irrespective of whether they had or did not have children. Once removed, fertility quickly returns back to its normal stage. Therefore, this is the correct option.

Thus, the correct option is D) stops fertilization.

Note: Expulsion, perforation, infection, cramping, heavier period, irregular bleeding and spotting, string problems, and pregnancy are most common side effects of Copper T implantation.