Which one of the following is not a characteristic of a good test?

Correct option is B

Correct Answer: B — Planning
Explanation
A good test is judged by certain qualities or characteristics related to how effectively it measures learners’ performance.
Reliability means the test gives consistent results.
Objectivity means scoring is free from examiner bias.
Differentiate (discriminating power) refers to the ability of a test to distinguish between high and low achievers.
All these are characteristics of a good test.
Planning, however, is a step in the process of test construction, not a characteristic of the test itself. Therefore, it is the correct answer.