You will get better help if you ask this question on the math section of Brainly
Aryans came to India, with the British, in the 19th century. Many British Indologists and a German one, created the Aryan invasion theory, by giving racist meaning to a Sanskrit word 'arya' which meant nobleman, at a time when race was used to justify colonialism. So, Aryans entered India, not by land, not by sea, nor did they land from the sky. They came through the textbook route.
The answer is a republic. In this form of government, a leader or group of leaders is chosen by the people. This differs from a democracy (which it is commonly confused with) in that in a democracy every citizen participates in decision-making, not just an elected leader or body.
I would say it’s option a.
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