The nurse is discussing cervical mucus changes with a woman who wishes to use natural family-planning methods. What information about cervical mucus at ovulation will the woman indicate to the nurse, demonstrating that learning has taken place?

A. Cervical mucus facilitates movement of the ovum through the fallopian tube: Cervical mucus primarily affects sperm transport through the cervix and does not facilitate ovum movement through the fallopian tube. B. Cervical mucus enhances the motility of the sperm: Around ovulation mucus becomes thin, clear, and stretchy, creating a hospitable medium that helps sperm survive and move toward the egg. C. Cervical mucus provides vaginal lubrication during intercourse: Cervical mucus does contribute to lubrication, but the key fertility-related change at ovulation is enhanced sperm transport rather than lubrication alone. D. Cervical mucus indicates endometrial readiness for implantation: Endometrial readiness is a separate process; cervical mucus characteristics reflect fertility status and sperm transport, not directly implantation readiness.