A 2023 EPA report listed lead in tap water (parts per billion) for four water districts: District P, 1.2; Q, 2.1; R, 9.4; S, 1.8. The report flagged District R as concerning. The strongest support is ______
Which choice most logically completes the text using the data above?
- A
the average across districts.
- B
District S's 1.8 ppb.
- C
District P's 1.2 ppb.
- Dcheck_circle
District R's 9.4 ppb, more than 4x the next-highest district.
Explanation
"Concerning" is supported by R's 4x higher lead level. Choice B captures this directly.