what do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley…

what do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley civilization? choose 1 answer: a suggest they engaged in sea trade with other societies b suggest they had a religious belief system centered around gods of the ocean c suggest they built ships to travel the indus river
Answer
Brief Explanations:
Shells used in jewelry and a large - dredged canal imply access to seashells from distant sources. This is most likely through sea - trade with other societies. There is no clear indication of a religious belief centered around ocean gods or ship - building for river travel from just these discoveries.
Answer:
A. suggest they engaged in sea trade with other societies