Which city existed in the Indus Valley civilization ?

The correct answer is Option (2) - Harappa

The city that existed in the Indus Valley civilization is Harappa.

Harappa: This is one of the most well-known cities of the Indus Valley Civilization, along with Mohenjo-daro. It flourished around 3300 BCE to 1300 BCE.

Dwarka: Dwarka is an ancient city in Gujarat, India, but archaeological evidence suggests it wasn't a major settlement during the Indus Valley Civilization period.

Sanchi: Sanchi is known for its Buddhist monuments, but these date back to the Maurya Empire period (3^rd century BCE onwards), which is much later than the Indus Valley Civilization.

Muziris: Muziris was a prominent port city on the Malabar Coast of India, but historical evidence suggests it thrived during the Roman era, not the Indus Valley Civilization.