Explanation:

In India, the currency notes of denominations $\text{₹}10$ and above bear the signature of the Governor of the Reserve Bank of India (RBI). The $\text{₹}1$ note is the only exception, which bears the signature of the Finance Secretary, Government of India (Option 1). The Finance Minister (Option 2) is a political appointee and does not sign currency notes. The Governor of the State Bank of India (Option 3) heads a commercial bank, not the central bank responsible for currency issuance. The RBI Governor is the head of the central bank, which is the sole authority for issuing currency notes (except for the $\text{₹}1$ note). Therefore, (4) Governor, Reserve Bank of India is the correct answer.