Final answer:
Tubal ligation is a nonsurgical method of sterilization that can be performed in a gynecologist's office. It involves blocking or cutting the Fallopian tubes to prevent sperm from reaching and fertilizing eggs.
Step-by-step explanation:
A nonsurgical method of sterilization that can be performed in a gynecologist's office is tubal ligation. Tubal ligation involves blocking or cutting the Fallopian tubes, which prevents sperm from reaching and fertilizing eggs. This procedure permanently blocks the tubes and is considered irreversible.