Read the passage below and answer the following question.
The male reproductive system is located in the pelvis region.The testes are situated outside the abdominal cavity within a pouch called scrotum.. The testis is covered by a dense covering. Each testis has about 250 compartments called testicular lobules. Each lobule contains one to three highly coiled seminiferous tubules.. Each seminiferous tubule is lined on its inside by two types of cells called male germ cells and Sertoli cells.. The regions outside the seminiferous tubules called interstitial spaces.. Leydig cells synthesise and secrete testicular hormones called androgens. The male sex accessory ducts include rete testis, vasa efferentia ,epididymis and vas deferens..The seminiferous tubules of the testis open into the vasa efferentia through rete testis. The vasa efferentia leave the testis and open into epididymis located along the posterior surface of each testis. The epididymis leads to vas deferens that ascends to the abdomen and loops over the urinary bladder Secretions of accessory glands constitute the seminal plasma which is rich in fructose, calcium and certain enzymes. The secretions of bulbourethral glands also helps in the lubrication of the penis.

Which part helps in maintaining the low temperature of the testis?

Scrotum

The correct answer is Option (2) - Scrotum

The male reproductive system is located in the pelvis region. It includes a pair of testes alongwith accessory ducts, glands and the external genitalia.The testes are situated outside the abdominal cavity within a pouch called scrotum.

The scrotum helps in maintaining the low temperature of the testes (2–2.5^o C lower than the normal internal body temperature) necessary for spermatogenesis. In adults, each testis is oval in shape, with a length of about 4 to 5 cm and a width of about 2 to 3 cm. The testis is covered by a dense covering.