Final answer:
A bunion is a tender nodule formed around bursae over the base of the great toe. Wearing shoes with a narrow, pointed toe box, such as high heels, is most likely to cause the development of bunions.
Step-by-step explanation:
A bunion is a tender nodule formed around bursae over the base of the great toe. It is a localized swelling on the medial side of the foot, next to the first metatarsophalangeal joint. Wearing shoes with a narrow, pointed toe box, such as high heels, is most likely to cause the development of bunions.