Question

One student is investigating the cause of the unusual smell of water in wells of a location. What should be done to investigate the cause of the contamination of well water?
A.)record information about the land surface and location of the polluted wells
B.) study all events in the location during the past one year
C.) ask gas companies in the location to hire experts to check leakages
D.) question secondary sources about the events in the location

Answer 1

b