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?

Cervical mucus facilitates movement of the ovum through the fallopian tube.

Cervical mucus enhances the motility of the sperm.

Cervical mucus provides vaginal lubrication during intercourse.

Cervical mucus indicates endometrial readiness for implantation.