3. to see data for users from the u. s. and canada only in a view, which filter would be applied?

Filter 1: Include U.S. and Canada

Explanation:

To see the data for users from the United States and Canada only "in a view" - this means at a time - this means that only one filter is needed for seeing the data for both countries. This therefore means that Filter 1: include U.S and Canada is the best filter that should be applied.

c

explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long  

answer; permissive;