What caused a custom report to appear in Spanish for an English speaker?

The occurrence of a custom report displaying in Spanish for an English speaker can be attributed to the language settings associated with the report's creator. When a report is generated, it typically inherits the language preference of the individual who created it. If that individual set their interface or report generation settings to Spanish, the report will reflect that language setting regardless of the viewer's preferences.

In this context, the language of the report is essentially determined by the creator's configurations, which makes option B a plausible explanation for the observation. This reinforces the importance of understanding the settings tied to report creation, especially in environments where multiple languages are utilized. If a report creator primarily works in Spanish, it is likely to default to that language, affecting all users who access it.