Removal of testes is:
castration
The correct option is A.
Explanation of the correct option:
Explanation of the incorrect options:
Option B:
Vasectomy is the surgical sterilization technique involving the tying of vas deferens.
Option C:
Tubectomy is the tying of the fallopian tubes of females.
Option D:
Ovariectomy is the removal of ovaries.
Final answer: Removal of testes is castration.