Final answer:
About 30 percent of infertility cases in couples are due to female infertility, and another 30 percent to male infertility. The remaining percentage includes both partners or unknown causes. Options A, B, and C provided in the question do not correctly represent the percentage for female or male factors of infertility.
Step-by-step explanation:
Infertility refers to the inability of reproductive age couples to conceive after at least one year of regular, unprotected sexual intercourse. Regarding the specific question posed, about 30 percent of infertility cases in couples can be attributed to female factors, which is a significant figure but none of the provided answer options (A 17%, B 22%, or C 58%) are correct. Similarly, about 30 percent of infertility is due to male factors. The rest of the infertility cases can either be attributed to both partners or remain unexplained due to unknown causes.
The causes of female infertility often involve issues related to the production of viable eggs by the ovaries, such as polycystic ovary syndrome, or structural problems in the Fallopian tubes or the uterus, like endometriosis and uterine fibroids. Furthermore, risk factors for female infertility include smoking, stress, poor diet, and advanced age, with fertility declining considerably after age 35 and ending with menopause.