The correct answer is: (A) First trimester.
Medical Termination of Pregnancy (MTP) is considered relatively safe when performed during the first trimester of pregnancy. The first trimester lasts from the first day of the last menstrual period (LMP) to the end of the 12th week of pregnancy. During this period, the risk of complications is generally lower, and the procedures for termination, such as medical or surgical abortion, are more straightforward.
MTPs performed in the first trimester are typically associated with fewer risks and complications compared to later stages of pregnancy. However, as the pregnancy progresses beyond the first trimester, the procedure becomes more complex, and there is an increased risk of complications such as infection, heavy bleeding, and injury to the cervix or uterus.
Therefore, MTPs are considered relatively safe when performed during the first trimester, making (A) First trimester the correct answer.