To troubleshoot query performance issues:
Option B: Developer Console
Using Query Plan Tool:
Open Developer Console.
Go to the Query Editor.
Enter your SOQL query.
Click on "Explain" to see the query plan.
Reference:
"Use the Query Plan tool in the Developer Console to optimize and troubleshoot SOQL queries."
- Salesforce Developer Guide: Query Plan Tool
Why Other Options Are Incorrect:
Option A: Setup Menu does not provide tools for query performance.
Option C: Visual Studio Code IDE requires extensions and is less direct for query performance.
Option D: AppExchange is for finding apps, not for troubleshooting performance.