Explanation:

• The presidential system, as in the US, practices separation of powers between the legislature and executive.
• In India, executive is a part of the legislature, and the legislature is led by the executive.
• So, there is ongoing interdependence between the two.
• The same cannot be said of autocratic and monarchical systems.
• Some monarchies like that in UK are based on interdependence of legislature and executive, but here the most appropriate answer was B.