The correct option is B Ovary
Anther is male reproductive part of the flower.
Uterus is a major female hormone-responsive reproductive sex organs in humans.
Stamen is pollen-producing reproductive organ of a flower.
Ovary is a female reproductive organ in which ova or eggs are produced in humans. In flower, ovary is the hollow base of the carpel of a flower, containing one or more ovules.
Thus, the correct answer is option (B), 'Ovary'.