The ovary under the stimulus of_, also produce_.

Explanation

The correct answer is FSH, Estrogen. Follicle-stimulating hormone (FSH) is responsible for stimulating the ovaries to produce estrogen, which is crucial for the development of the ovarian follicles and regulation of the menstrual cycle. Option A is incorrect because LH is produced by the pituitary gland, not the ovaries. Option C is incorrect because it suggests that LH is the stimulus for FSH production, which is not the case. Option D is incorrect because while both estrogen and progesterone are produced by the ovaries, their production is under the control of different hormones (FSH for estrogen and LH for progesterone).