Explanation
Conditional visibility is a feature that allows administrators to show or hide screen components in a flow based on certain conditions or criteria. For example, conditional visibility can show only one question on a screen depending on the value of another field or variable. Conditional visibility consists of one or more rules that define when to show or hide a component based on an expression that evaluates to true or false. In this case, the administrator can use conditional visibility to hide the unnecessary question on the screen flow based on the scenario. References:
https://help.salesforce.com/s/articleView?id=sf.flow_ref_elements_screencmp.htm&type=5