The correct answer is Unitary system. Explanation & Key Takeaways: • The appointment of Governors by the Centre indeed reflects a characteristic of the unitary system within the Indian Constitution. • This arrangement consolidates central control over state governance, bolstering the authority of the central government. • The President, acting on behalf of the Centre, appoints Governors for the states through a warrant under his hand and seal, with each Governor serving a fixed term of five years. • Despite being designated as the Constitutional head of the state, the Governor essentially operates as the representative of the central government within the state's administrative framework, thereby affirming the federal nature of India's polity. • The Governor's resignation process is also subject to the President's discretion, further underscoring the centralized nature of this appointment mechanism. Important Notes: • India has a federal structure with unitary features. In a unitary system, the central government controls the entire government, with all authorities and administrative divisions within it. • India is a Sovereign Socialist Secular Democratic Republic with a Parliamentary form of government. • The Council of Ministers, led by the Prime Minister, advises the President, who is the constitutional head of the country.