* Why Use Static Resources andTest.loadData? * C: Static resources allow you to define reusable test data (e.g., in a CSV file). * D:Test.loadDatasimplifies loading bulk test data into test classes from static resources. * Why Not Other Options? * A: Using@isTest(seeAllData=true)violates test isolation principles and is discouraged. * B:@isTest(isParallel=true)is used for parallel execution, not for creating test data. References:Test.loadData:https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_tools_load_data.htm