Leydig cells are stimulated by the hormone produced from__________.

The correct option is A anterior pituitary
The androgens (male hormones) are synthesised and secreted by the Leydig cells of the testis.

LH (luteinizing hormone) or interstitial cell stimulating hormone (ICSH) stimulates the Leydig cells to produce androgens.

LH is secreted from the anterior pituitary gland.

Androgens are a group of male hormones which play a vital role in the development of secondary sexual characters and also spermatogenesis.