Which dynasty was ruling over north India when Alexender had invaded India in ancient times?

Nanda

The correct answer is Option 1- Nanda

The Nanda dynasty was ruling over North India when Alexander invaded India in ancient times.

The Nanda dynasty was founded by Mahapadma Nanda in the 5th century BC, and it ruled over a large part of North India, including the Magadha region. The Nandas were a powerful dynasty, and they were known for their large army and their vast wealth.