When preparing a planning report, which practice best ensures integrity and credibility of data sources?

• A. Document data sources and methods, provide citations, and state all assumptions.
• B. Use only internal data and omit external citations.
• C. Prefer data from a single source even if unverified.
• D. Avoid disclosing data limitations.

Answer: (A)

Transparency about data sources and methods is essential for trust and credibility in planning reports. Documenting where data come from, how they were collected and processed, providing citations, and clearly stating all assumptions lets readers verify information, assess reliability, and understand any limitations or potential biases. This openness also supports reproducibility, so others can follow the same steps to reproduce findings or update the analysis as new data emerge.

The other options fall short because they reduce transparency: relying only on internal data without external citations limits perspective and makes it harder to judge reliability; leaning on a single unverified source increases risk of bias and errors; and avoiding data limitations prevents readers from fully assessing data quality and uncertainty.