In a study, more than half of sampled streams contained one or more neonicotinoids.

In a study, more than half of sampled streams contained one or more neonicotinoids.

• A. True
• B. False
• C. Not studied
• D. Insufficient data

Answer: (A)

The main idea is interpreting how often a contaminant appears across multiple sites. If a study reports that more than half of the sampled streams contained one or more neonicotinoids, that means the proportion of streams with at least one detectable neonicotinoid exceeds 50%. Since “one or more” simply means any neonicotinoid detected in a stream counts, the finding supports the statement as true. This indicates widespread presence in the sampled streams, rather than rarity. The other options would apply only if there were no data, inconclusive results, or no study conducted, which isn’t the case here.

The main idea is interpreting how often a contaminant appears across multiple sites. If a study reports that more than half of the sampled streams contained one or more neonicotinoids, that means the proportion of streams with at least one detectable neonicotinoid exceeds 50%. Since “one or more” simply means any neonicotinoid detected in a stream counts, the finding supports the statement as true. This indicates widespread presence in the sampled streams, rather than rarity. The other options would apply only if there were no data, inconclusive results, or no study conducted, which isn’t the case here.