There is a Parliamentary System of Government in India because the
- Lok Sabha is elected directly by the people
- Parliament can amend the Constitution
- Rajya Sabha cannot be dissolved
- Council of Ministers is responsible to the Lok Sabha
A parliamentary system of government is a system of democratic governance of a state in which the executive branch derives its democratic legitimacy from and is held accountable to the legislature (parliament). So, the executive (council of ministers) is responsible to the Lok Sabha (part of Parliament) is why India has a Parliamentary system of Government.
The correct option is D.