Question

review the water quality report and then answer the question.
summerfields drinking water comes from the li river. the watershed begins on the slopes of mount eagle and flows nearly eighty - five miles from the rivers headwaters. naturally occurring fluoride in the li 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 summerfield?
the writer specifies that the li river flows down the slopes of mount eagle.
the writer uses the technical abbreviation ppm and notes the detection limit for analyzing fluoride.
the writer tries to make summerfields water sound appealing.
the writer defines unfamiliar terms (ppm) and informs readers that the water is safe.

Explanation:

Residents of Summerfield would be interested in knowing if their drinking water is safe and might not be familiar with technical terms like "ppm". Defining "ppm" and assuring water safety caters to their concerns, unlike the other options: specifying the river's source (geographical detail not unique to resident interest), using technical jargon without explanation (not for general residents), or just making water sound appealing (not as direct as safety and term - definition for residents).

Answer:

The writer defines unfamiliar terms (ppm) and informs readers that the water is safe.