Final answer:
The Billings Method, also known as the Cervical Mucus Method, is a form of natural family planning. It involves monitoring and observing changes in cervical mucus to predict ovulation and prevent pregnancy.
Step-by-step explanation:
The subject of the question is the Billings Method, also known as the Cervical Mucus Method. This method is a form of natural family planning, where a woman monitors and observes changes in her cervical mucus to predict ovulation and determine when to avoid unprotected sex to prevent pregnancy.
The disadvantages of the Billings Method include:
- Requires daily monitoring and observation
- May be challenging for women with irregular menstrual cycles
- Provides no protection against sexually transmitted infections
- Does not offer hormonal benefits