Ans.B. Proliferative phase
The image depicts the proliferative phase of the endometrium.
Features in the proliferative/estrogenic phase
The glands of the functional layer are simple tubules with regular epithelium.
The endometrium is thick, stoma compact, short straight glands are present.
Arteries become more coiled and spiralled.
Features in Secretory phase
The secretory phase of the endometrium begins on the 15th day and persists until the onset of menstruation.
Subnuclear vacuolation (presumptive evidence of progesterone activity).
Features in Menstrual Phase
Glands shrink with prominent vessels and hemorrhagic spots.