Strategy

Correct answer: A. Because environment and competition may change

Explanation: The direct answer is A: because the environment and competition may change. A strategy is not a plan that remains perfect forever. After implementation, managers compare actual results with objectives and observe customers, competitors, technology, laws, and economic conditions. If any of these change, the old strategy may stop working or may need adjustment. Regular review helps the organisation find problems early, use new opportunities, and control threats. Option A is correct. Option B is wrong because review does not mean removing all rules; rules may still be necessary. Option C is wrong because a method is not always wrong, and the question concerns changing conditions. Option D is wrong because budgets can be useful for allocating and controlling resources. Memory cue: changing environment requires a reviewed, dynamic strategy.