Final answer:
The mammography view that displays the pectoral muscle, retromammary tissue, and nipple in profile is the Mediolateral Oblique (MLO) view.
Step-by-step explanation:
The mammography view that requires visualization of the pectoral muscle on the posterior edge of the breast, the retromammary tissue, and the nipple in profile is the Mediolateral Oblique (MLO) view. This view is essential for detecting breast abnormalities and for comprehensive evaluation of the breast tissue. Proper positioning during the MLO view is critical to ensure that the pectoral muscle, retromammary tissue, and nipple are adequately visualized for accurate interpretation of the mammogram.