What scale is used to score primary indicators in stream assessments?

The correct scale used to score primary indicators in stream assessments is typically a range from 0 to 3. This scoring system allows for a simplified categorization of stream health and condition, where different scores correspond to varying levels of quality. For instance, a score of 0 might indicate very poor conditions, while a score of 3 represents excellent health. This scale effectively facilitates the analysis and comparison of different streams or sections of waterways, making it a preferred choice in many environmental assessments.

The other options, while they offer different ranges, do not align with standard practices in stream health assessments where a 0-3 scale is widely applied for clarity and ease of understanding.