Breast self-exam (bse) is an important defense in the early detection and prevention of breast cancer. bse should be performed when

BSE should be performed after 2 - 3 days of period (menstruation cycle).

Explanation:

Breast cancer is the most abundant in whole world. The burden of breast cancer is so high. At initial stage, it is possible to detect and prevent from the breast benign or malignant cancer by breast self examination (BSE). It should be performed every month after the age of 18 and best time for BSE is about 2 to 3 days after the completion of menstruation cycle (periods).

not really sure sorry just trying to get points