What visual type would not support conditional formatting in Power BI?

The Card visual in Power BI is primarily designed to display a single value or metric prominently. It focuses on showing the key performance indicators (KPIs) or the most important figures without the additional context that other visuals can provide. This specific type of visual does not support conditional formatting because it does not have multiple data points or categories to apply such formatting to. Conditional formatting is typically used to change the appearance of visuals based on the values they display, allowing for more dynamic and insightful representations of data. In contrast, visuals like the Gauge, Matrix, and Table are structured to handle more complex data representations, which makes them suitable for conditional formatting based on various criteria within the dataset.