Final answer:
There is no specific screening test for endometrial cancer; a Pap test detects cervical cancer but not specifically endometrial cancer. Diagnosis of endometriosis, often confused with endometrial cancer, is possible through laparoscopy.
Step-by-step explanation:
The screening test used to detect endometrial cancer is not listed among the options provided. The Pap test, also known as a Pap smear, is designed to detect potentially pre-cancerous and cancerous cells in the cervix and is the most widely used screening test for cervical cancer. While it may occasionally detect abnormal endometrial cells, it is not a screening tool specifically for endometrial cancer. The correct answer to the question, 'What screening test can be used to detect endometrial cancer?' would be 'a. There is no screening test that detects it.' However, diagnosis of endometriosis, which is often confused with endometrial cancer, primarily depends on laparoscopy wherein a camera is inserted through the abdominal wall to visually inspect the endometrial tissue.