Where is the ovum released from the ovary?

Given below are two statements:
$Statement-I$: At the onset of puberty, the pituitary gland begins secretion of gonadotropin releasing hormone.
$Statement-II$: $GnRH$ initiates the significant increase in the secretion of follicle stimulating hormone $(FSH)$ which induces gametogenesis.
In light of above statements, choose the correct appropriate answer from the options given below.

At the end of the first meiotic division,the male germ cells differentiate into

If two primary spermatocytes and two primary oocytes undergo meiosis simultaneously,what will be the ratio of spermatozoa and ova produced at the end of the gametogenesis?

Which hormone stimulates the development of the corpus luteum?

What is the process of transformation of spermatids into spermatozoa called?