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					 Parliamentary or Presidential Government can be distinguished mainly by
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                        - its federal nature
- the rigidity of the Constitution
- the employer-employee relations
- the legislative-executive relations
 
Correct Option: D
In a parliamentary system, the executive branch derives its democratic legitimacy from, and is held accountable to, the legislature; the executive and legislative branches are thus interconnected. In a presidential system, the head of state often is also the head of government, and the executive branch does not derive its democratic legitimacy from the legislature. 
 
	