Final answer:
The purpose of wearing Bundu masks in the Sande Society is to represent philosophical and religious concepts during the initiation ceremony of young women.
Step-by-step explanation:
The purpose of wearing Bundu masks by women in the Sande Society is mainly to represent philosophical and religious concepts. The Bundu masks are worn during the initiation ceremony of younger women who have completed their three-month reclusion in the forest. These masks symbolize the transformation of the young women into mature adults and also represent the Sande Society's beliefs about womanhood, fertility, and wisdom.