Which action should the business analyst take to ensure the City field is not available for user mapping options?

The appropriate action to ensure the City field is not available for user mapping options is to change the format from 'Geo data' to 'General.' When a field is designated as 'Geo data' in Qlik Sense, it is treated as geographical data, which means it will be made available for mapping functionalities within the application. By changing the format to 'General,' the field is no longer recognized as geographical information, effectively removing it from the mapping options.

This approach allows the business analyst to maintain the City field in the data model without exposing it to mapping features, addressing the need for control over what data is visualized in that context. The other options involve either unchecking mapping options, which does not change the data type classification, or removing the City field entirely, which might not be desirable if the field has other useful applications. Setting the City field as an attribute also does not remove it from mapping options but rather categorizes it differently without impacting the visibility in map-related features.