Answer:
Option A, testosterone
Step-by-step explanation:
Leydig cells are the interstitial cells of the testes that are responsible for releasing male androgen hormones -- one of which is testosterone, the primary male sex hormone functioning in the development of the male reproductive organs and predominantly male characteristics -- in response to the presence of luteinizing hormone (LH).
Semen is produced by the seminal vesicles. Estrogen is produced by the the ovaries, fatty tissues, and adrenal glands. Androgen-binding globulin specifically is produced by the Sertoli cells of the seminiferous tubules, which are "neighbors" to the Leydig cells.