Final answer:
The question is related to the steps involved in one-to-one marketing, and the correct answer is 'evaluate'.
Step-by-step explanation:
The question is related to the steps involved in one-to-one marketing as described by Peppers and Rogers. The steps mentioned are customize, evaluate, identify, differentiate, and interact. However, the question asks for the step that is not included in their description. The correct answer would be evaluate. While customize, identify, differentiate, and interact are all part of the process, evaluation is not mentioned in their steps.