In the illustration, which is the vas deferens?

I think the correct answer among the choices listed above is the first option. The path of sperm cells through the male reproductive system starts from the testes, then it travels to the epididymis, to the vas deferens and lastly to the urethra. Hope this answers the question.

Ribonuclease activity is a type of nuclease that catalyzes the degradation of rna into small components.