Which technique should a Tableau consultant use to make visualizations faster?

Comprehensive and Detailed Explanation From Exact Extract:

Tableau performance documentation explains that rendering speed is strongly affected by the number of marks that Tableau must draw. Each dimension placed on the Detail shelf increases the granularity of the view and increases the number of marks in the visualization.

Removing unnecessary dimensions:

Reduces the number of marks

Reduces rendering time

Decreases memory and CPU usage

Improves interactive performance

Option A (Show Relevant Values) can slow performance because Tableau must dynamically calculate relevancy each time filters change.

Option C is incorrect because COUNTD is one of the slowest aggregate functions in Tableau and does not speed visualization.

Option D is incorrect because adding more sheets increases dashboard load time and rendering workload.

Removing unnecessary fields from Detail is a documented best practice for improving visualization speed.

Tableau Performance Checklist recommending reducing marks and removing unnecessary dimensions.

Rendering optimization guidance explaining how dimensions on Detail expand mark counts.

Best practices discouraging overuse of COUNTD.