An example of point source pollution is:Question 5Select one:a.agricultural fieldb.abandoned minesc.a set of enormous animal farmsd.city

The question is asking for an example of point source pollution. Point source pollution is any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack.

Here are the options:

a. Agricultural field b. Abandoned mines c. A set of enormous animal farms d. City

Let's analyze each option:

a. Agricultural field: This is typically considered non-point source pollution because it comes from many diffuse sources in the agricultural landscape.

b. Abandoned mines: This can be considered a point source of pollution because the pollutants come from a single, identifiable source.

c. A set of enormous animal farms: This could be considered either point source or non-point source pollution, depending on the specifics. If the pollution comes from a specific place on the farm, like a waste lagoon, it's point source. If it comes from many diffuse sources across the farm, it's non-point source.

d. City: This is typically considered non-point source pollution because it comes from many diffuse sources across the urban landscape.

So, the best answer to this question would be b. Abandoned mines.