How does inhibin affect the release of GnRH and FSH?
Inhibits the release of GnRH and FSH
Stimulates the release of GnRH and FSH
Has no effect on the release of GnRH and FSH
Inhibits the release of LH and testosterone
Inhibin inhibits the release of GnRH and FSH, which will cause spermatogenesis to slow down.
Hence option a is correct.