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Copper-T is a device that prevents:

1. implantation of blastocysts
2. ovulation
3. fertilization
4. egg maturation

Correct answer: implantation of blastocysts

Solution

Copper-T is an intrauterine device that works by making the uterus unsuitable for implantation. It does not primarily stop ovulation or egg maturation, and its key effect is preventing the blastocyst from implanting.

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