India was under the British rule where parliament form of government was in operation. Even during the course of the freedom movement, people of the country got familiarized with the principles of parliamentary government.
Further a charm for giving priority to responsibility over stability was another reason. The constitutional makers wanted to avoid heroic worship especially on communal reason. Hence they didn’t go for Presidential form of government. Multi ethnic population was another criteria.
Hence India adopted parliamentary form of government. It has various advantages
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