Cecilia, a 35-Year-Old Client Who Is Roman Catholic, Tells Her

Cecilia, a 35-year-old client who is Roman Catholic, tells her nurse that she uses a natural method of contraception, in which she closely monitors changes in her cervix, cervical mucus, and temperature to determine when she is ovulating so that she can abstain from sexual intercourse during that time and avoid conceiving. The nurse recognizes that Cecilia is using which method of contraception?

A) Cervical mucus
B) Basal body temperature
C) Symptothermal
D) Lactational amenorrhea