What is a challenge of triple-bottom-line accounting?

The correct response highlights that a significant challenge of triple-bottom-line accounting lies in the lack of standardization across companies. Triple-bottom-line accounting evaluates a company's social, environmental, and economic performance, ensuring that all three areas are considered rather than exclusively focusing on profit. Since there are no universally accepted standards for measuring aspects like social and environmental impact, different companies may employ various metrics, methods, and criteria. This variability creates difficulties in comparing performance across organizations and can hinder the reliability of the data gathered.

The other options do not accurately reflect the challenges associated with triple-bottom-line accounting. While the methodology does indeed consider economics among other factors, it is never solely focused on any single metric or issue. Additionally, rather than being standardized, the very nature of triple-bottom-line accounting emphasizes flexibility to accommodate the unique contexts of different businesses, further complicating comparisons.