Answer:
The correct answer is - option D. reliability.
Step-by-step explanation:
When a test is administrated once and collected data and administrated again after a specific time to same subject and collected data for comparison of the change in data.
This would be able to state the reliability of the test if the data is still give the similar conclusion or there is change or error occurred first test. The test result will yield an evaluation of the readability of the study or test.
Thus, the correct answer is - option D. reliability.