Answer: B
. Merchants' understanding of the patterns of the monsoon winds
Explanation:
India faces a very heavy monsoon every year that brings heavy rainfall and very strong winds.
It would make sense that for merchants to have been able to trade in India in the past, they would have had to have a good understanding of the patterns of the monsoon winds so that they would embark on their trade missions with little to no losses.
There are no choices. however, an example of a person with integrity could be doing the right thing when no one is watching and staying true to yourself.