What is the primary purpose of a contraceptive sponge?

The primary purpose of a contraceptive sponge is to prevent pregnancy. The sponge is a barrier method of contraception that contains spermicide, which helps to kill sperm and prevent fertilization when inserted into the vagina before intercourse. By physically blocking sperm entry into the uterus and actively killing sperm, the sponge effectively reduces the likelihood of conception during sexual activity.

Other options, while related to reproductive health, do not align with the primary function of the sponge. While the sponge itself does not offer protection against sexually transmitted infections, lubrication may be a secondary benefit from its use, and it certainly does not regulate menstrual cycles. These distinctions clarify the primary role of the contraceptive sponge as a means to prevent pregnancy specifically.