The principles of Positioning Advertising Copy Testing (PACT) state that a good copy testing system will:
A. use a single measure of a single dependent variable to ensure clarity of interpretation.
B. provide measurements that are relevant to the objectives of the advertising.
C. evaluate responses at a single level of the hierarchy of effects.
D. test alternative executions at various stages of completion.
E. measure needs satisfaction levels proposed by each ad under consideration.
Answer: B