Final answer:
The correct order in which things happened in ancient India is A. Harappan Civilization, Aryans, Hinduism.
Step-by-step explanation:
The correct order in which things happened in ancient India is A. Harappan Civilization, Aryans, Hinduism.
First, the Harappan Civilization developed in the Indus River valley, with cities like Harappa and Mohenjo-Daro. These cities were then abandoned, possibly due to deforestation and a decline in soil productivity. Next, the Aryans, a group of powerful nomadic warriors, arrived in northern India and conquered most of the region. Finally, Hinduism developed from much older traditions, including those of the Aryans.