Match the structures/parts of human male reproductive system in Column I with their respective explanation in Column II and select the correct answer from given options.

	Column I		Column II
i.	Prepuce	a.	Fibromuscular band that retains testis in scrotum.
ii.	Penis	b.	Primary male reproductive gonad.
iii.	Testis	c.	Loose fold of skin covering glans penis.
iv.	Gubernaculum	d.	Male copulatory organ.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.