To answer this question, the user needs to understand the different terms in software testing.

Test conditions are derived from specifications. Specifications are documents that describe the requirements for the software being developed. Test conditions are based on the requirements found in the specifications.

Option A, test cases, are derived from test conditions. Test cases are specific scenarios or steps that are carried out to verify that the software meets the test conditions.

Option C, test data, is the data used to execute the test cases and verify the expected results.

Option D, test design, is the process of creating the test cases and test data needed to verify that the software meets the requirements specified in the specifications.

Therefore, the correct answer is:

The Answer is: B. Specifications