Final answer:
Tubal ligation is the surgical procedure done to prevent conception by blocking, tying, or cutting the Fallopian tubes.
Step-by-step explanation:
The surgical procedure performed as a method to prevent conception is tubal ligation. This is a form of permanent female sterilization, where the Fallopian tubes are either tied, cut, or blocked with metal implants. Tying or cutting the tubes prevents eggs from traveling from the ovaries, where fertilization typically occurs. When metal implants are used, scar tissue forms over time around the implants, creating a blockage. Because this process stops sperm from reaching the eggs, it thereby effectively prevents pregnancy.