According to the NCERT text:

1. Oral contraceptive pills inhibit ovulation and implantation .
2. Vasectomy is a surgical method that blocks gamete transport, resulting in semen containing no sperms .
3. While the text specifies that hormone-releasing IUDs make the uterus unsuitable for implantation, Copper-T (an IUD) primarily suppresses sperm motility and fertilising capacity. However, since the first two statements are explicitly correct based on the text, 'All of the above' is the intended answer in this context.