The answer is a. pelvic/o.
Womb, uterus, metra, hystera are synonims. Uter/o is Latin word for the womb. Metr/o is Greek word meaning the womb. The word is from Greek metr which means mother. Also, word hyster/o has Greek origin and refers to the womb.
Pelvic/o refers to the bone structure inside of which the womb can be found.