Final answer:
The woman's cervical mucus that looks like egg whites indicates that she is in the ovulation phase of her menstrual cycle. This type of cervical mucus helps sperm swim through the cervix and into the uterus, making fertilization more likely.
Step-by-step explanation:
The woman's cervical mucus that looks like egg whites indicates that she is in the ovulation phase of her menstrual cycle. During this phase, estrogen stimulates the cervix to secrete larger amounts of thinner mucus, which resembles egg whites. This type of cervical mucus helps sperm swim through the cervix and into the uterus, making fertilization more likely.