Question1.A couple presents for evaluation of infertility. They have been actively trying to conceive for 1 year and have not yet achieved pregnancy. The woman is 34 years old and has a 6-year-old child. She has a history of endometriosis and regular cycles. Her partner is a 58-year-old man with a history of prostate cancer at age 50. He is status post prostatectomy, but is otherwise healthy. What is the most likely cause of this couple's infertility?
