Multiple choice _________ provide the fluid to lubricate the ducts of male reproductive system. Testes Vas deferens Seminal vesicles Scrotum Reveal answer Fill a bubble to check yourself C Correct answer Explanation Seminal vesicles produce seminal fluid, which makes up about 60-70% of semen volume and provides lubrication for the male reproductive ducts. The testes produce sperm, vas deferens transports sperm, and scrotum protects the testes.