The correct option is
D female reproductive tract
The correct option is D.
Explanation of the correct option:
- Capacitation is the sperm activation process in mammals that occurs in the female reproductive tract.
- In the female reproductive tract, some secretion destabilizes the acrosomal part and activates sperm to penetrate the egg and fertilize the ovum.
Explanation of the incorrect option:
Option A:
- Vas deferens is the male reproductive structure that originates from the epididymis.
- Vas deferens carry sperms.
Option B:
- The epididymis is a long narrow closely coiled tubule that lies along the inner side of each testis of the male reproductive part.
- It stores sperms and secretes a fluid that nourishes sperms.
Option C:
- The Rete testes is a small tube in the testicles.
- It helps move sperm cells from the testis to the epididymis.
Final answer: Capacitation occurs in the female reproductive tract.