Don’t know if this is the place to give feedback on the courses / certifications, but here goes.
The chapter ’ Control Variable Scope and Logic Using Code Blocks in C#', https://www.freecodecamp.org/learn/foundational-c-sharp-with-microsoft/add-logic-to-c-sharp-console-applications/control-variable-scope-and-logic-using-code-blocks-in-c-sharp , points to the MS learn chapter Control variable scope and logic using code blocks in C# - Training | Microsoft Learn
The followup question is related to the ‘using’ statement, yet this statement isn’t mentioned in the related learn material at all. I would suggest changing the followup question to something that makes more sense given the chapter, or point to a different chapter.