What is meant by 'the data never lies'?

• A. Data is often unreliable and should be questioned.
• B. Data never lies by itself.
• C. Data can be used to mislead unless audited.
• D. Accurate measurement and attribution of success across different ad channels provide reliable insights into marketing effectiveness.

Answer: (D)

The idea behind “data never lies” is about measurement quality and proper attribution. When tracking is consistent and you attribute outcomes to the right marketing touchpoints across multiple channels, the numbers faithfully reflect what happened and which efforts actually drove results. In digital marketing, this means using unified metrics, proper tagging, and a credible attribution model so you can say with confidence which ads and channels contributed to a conversion or sale.

If measurement is sloppy or attribution is inconsistent, data can mislead—making it seem like one channel is more or less effective than it truly is. So the statement points to a trustworthy view of performance only when you have accurate measurement and cross-channel attribution.