Which of the following is correct about Nageshwar and Balakot?

The correct answer is Option 1 - These were specialised centres for making shell objects.

Nageshwar and Balakot, both settlements are near the coast. These were specialised centres for making shell objects – including bangles, ladles and inlay – which were taken to other settlements.

Specialised drills have been found at Lothal, Chanhudaro, and more recently at Dholavira too.

Water reservoirs were discovered in Dholavira, Gujarat.

Canals were found at Shortughai in Afghanistan.