Hillsboro's drinking water comes from the Cline River. The watershed begins on the slopes of Mount Eagle and flows nearly eighty-five miles from the river's headwaters. Naturally occurring fluoride in the Cline River is less than 0.5 ppm (parts per million), which is the detection limit for analyzing fluoride. The water is made safe to drink through conventional treatment methods and consistent monitoring.
Which best indicates that the primary audience is residents of Hillsboro?
The writer uses the technical abbreviation ppm and notes the detection limit for analyzing fluoride.
The writer defines unfamiliar terms (ppm) and informs readers that the water is safe.
The writer specifies that the Cline River flows down the slopes of Mount Eagle.
The writer tries to make Hillsboro's water sound appealing.