During an office visit with an 18-year-old client named Kimberly, the nurse asks whether she is using any form of birth control. Kimberly responds that she is currently breastfeeding her 6-month-old, so she doesn't need to be on birth control. The nurse recognizes that Kimberly is relying on which type contraception?

A) Abstinence
B) Tubal ligation
C) Symptothermal
D) Lactational amenorrhea

Kimberly is relying on the Lactational Amenorrhea Method (LAM) for contraception, which is based on the natural postpartum infertility that occurs when a woman is exclusively breastfeeding. This method can be effective for up to 6 months postpartum, as long as the woman's menstrual periods have not resumed, she is breastfeeding on demand (both day and night), and the baby is receiving no other foods or liquids regularly.