Final answer:
Developing a strategic plan is not part of the procedure for evaluating pluses and minuses of a diversified company's strategy and deciding what actions to take to improve the company's performance.
Step-by-step explanation:
Out of the options listed, developing a strategic plan is not part of the procedure for evaluating pluses and minuses of a diversified company's strategy and deciding what actions to take to improve the company's performance. Identifying the company's strengths and weaknesses, analyzing the external environment, and implementing the strategic plan are all important steps in this process.