What is the process of formation of the Graafian follicle called?

In rabbits,where does the maturation of sperm cells primarily occur?

Androgen binding protein,which helps in concentrating testosterone in the seminiferous tubule,and which inhibits $ICSH$ secreted by the anterior pituitary and $GnRH$ production by the hypothalamus,is secreted by:

Select the odd one out.

$FSH$ hormone acts on the Sertoli cells and stimulates the secretion of some factors which help in the process of spermiogenesis.

Which lytic enzyme is present in the sperm?