Question

the most common tumor of the uterus, the growth of which is hormone(estrogen) dependent as evidenced by its rapid enlargement during pregnancy and regression following menopause. cystic hyperplasia carcinoma of the endometrium leiomyosarcoma leiomyoma rhabdomyoma

Explanation:

Leiomyoma (uterine fibroid) is the most common uterine tumor. Its growth is estrogen - dependent: it enlarges during pregnancy (due to hormonal changes) and regresses after menopause (when estrogen levels drop). Cystic hyperplasia is related to endometrial changes, endometrial carcinoma is cancer, leiomyosarcoma is a malignant tumor (less common), and rhabdomyoma is rare in the uterus.

Answer:

D. Leiomyoma