Answer:
b. Sustentacular cells; FSH
Step-by-step explanation:
Sertoli cells are the sustentacular cells of seminiferous tubules since they serve to give structural support to the germ cells. Likewise, sustentacular cells are also present in ovaries.
The sustentacular cells of testes and ovaries serve to secrete inhibin hormone. The function of inhibin hormone is to inhibit the release of follicular stimulating hormone (FSH) from the anterior pituitary gland.