The correct answer is LH or Luteinizing hormone.
Like FSH, LH refers to a gonadotrophic hormone, which is discharged and generated by the cells in the anterior pituitary gland. It plays an essential role in monitoring the activity of the testes in men and ovaries in women.
In men, LH instigates the Leydig cells in the testes to generate testosterone that functions locally to encourage production of sperm, and in women, the LH conducts distinct functions in the two halves of the menstrual cycle. The LH instigates the corpus luteum to generate progesterone that is needed to encourage the initial phases of pregnancy, after fertilization.