(A) $$ \to $$ (ii), (B) $$ \to $$ (iii), (C) $$ \to $$ (iv), (D) $$ \to $$ (i)

(A) $$ \to $$ (i), (B) $$ \to $$ (iv), (C) $$ \to $$ (ii), (D) $$ \to $$ (iii)

(A) $$ \to $$ (iv), (B) $$ \to $$ (iii), (C) $$ \to $$ (i), (D) $$ \to $$ (ii)

(A) $$ \to $$ (iii), (B) $$ \to $$ (ii), (C) $$ \to $$ (iv), (D) $$ \to $$ (i)

Seminiferous tubules $$ \to $$ Vasa efferentia $$ \to $$ Epididymis $$ \to $$ Inguinal canal $$ \to $$ Urethra

Testis $$ \to $$ Epididymis $$ \to $$ Vasa efferentia $$ \to $$ Vas deferens $$ \to $$ Ejaculatory duct $$ \to $$ Inguinal canal $$ \to $$ Urethra $$ \to $$ Urethral meatus

Testis $$ \to $$ Epididymis $$ \to $$ Vasa efferentia $$ \to $$ Rate testis $$ \to $$ Inguinal canal $$ \to $$ Urethra

Seminiferous tubules $$ \to $$ Rete testis $$ \to $$ Vasa efferentia $$ \to $$ Epididymis $$ \to $$ Vas deferens $$ \to $$ Ejaculatory duct $$ \to $$ Urethra $$ \to $$ Urethral meatus

Before entry of sperm into ovum

Simultaneously with first cleavage

After entry of sperm but before fertilization

After fertilization