Answer: The correct answer is "A. redefining".
Explanation: As the business grows or is forced by competitive pressures to alter its product, market, or technology, redefining the company mission may be necessary.
In some cases the evolution of certain markets is so rapid and has total changes of paradigms, or approaches in such a way that the mission or model of a business can become obsolete and it is necessary to redefine it to continue competing in the market.