What causes the need for change? have at laest 2-3 sentences explaining it. i need the smartest answer.

Most organizations have to change as part of keeping up with the competition or adjusting to new market trends or technologies. Things such as mergers, restructuring, technological advancements, process enhancements, changing customer demands and new product lines are fairly common in today's business environments. If you recall, reasons for change can be attributed to an organization's external environment as well as their internal environment. This lesson will focus specifically on those changes that occur in a company's internal environment, including structural, strategic, people and process changes.

Iwant five points, so sorry to ruin your time.