What is the usual choice of "Metrics" for an assessment done using a Lifecycle-Based-Design Assessment?

Choosing measurements using primary data is particularly relevant in a Lifecycle-Based-Design Assessment because primary data provides firsthand information directly related to the product or system being evaluated. This data is typically collected through observation, experiments, or direct surveys, ensuring accuracy and relevance in the assessment process.

Primary data allows for a more contextual understanding of the lifecycle impacts of a design, including resource use, emissions, and other sustainability indicators that can be quantitatively analyzed. Utilizing primary data aids in identifying specific environmental impacts associated with each stage of the product's lifecycle, thus enhancing the reliability of the assessment results.

The choice of metrics can greatly influence the outcomes and recommendations of an assessment, making the use of robust, measurable primary data essential for effective analysis.