They are all bodies of water
In my opinion it’s B, as it is very important to stay safe in the country no matter what.
The appropriate response is Random sample. A simple random sample is a subset of a measurable populace in which every individual from the subset has an equivalent likelihood of being picked. A case of a basic irregular specimen would be the names of 25 workers being picked out of a cap from an organization of 250 representatives.
A unit of local government , usually a subdivision of a county, found in most mid-west states of the U.S. and in most Canadian lands.
I hope that my factual definition can help you a lot.
