The table relationships for the dataset are shown in the Relationships exhibit. (Click the Relationships tab.) You need to minimize the model size by eliminating invalid relationships. Which column…

Sales[Sales Amount] is a critical measure column used for analysis and reporting, and removing it would compromise essential business metrics.

A 'Row ID' column in a fact table like 'Sales' is often an arbitrary internal identifier unique to each row that serves no analytical purpose for creating relationships with other tables. Removing such a column reduces model size and eliminates potential sources of unnecessary or invalid relationships, optimizing the data model.

Sales[Sales ID] is likely a primary key for the Sales fact table, crucial for identifying individual sales records and establishing valid relationships with dimension tables.

While 'Plan[Row ID]' could also be a candidate, 'Sales[Row ID]' is a common redundant column in fact tables when not explicitly used for relationships, and the question specifically targets eliminating invalid relationships to minimize model size, often associated with such non-key identifiers.