The correct answer to this open question is the following.
Your question is a broad one, which means that it can have many forms of answering. As you did not provide options, references, or context, we are going to answer it in general terms.
The reason for occurring corruption is most of the time greed and the increase of power and control.
People tend to commit corrupt acts because as they say, "everyone has a price. What's is yours?" And that could be true if you are tempted by money, power, and influence. For that kind of people in politics or corporations, corruption is normal. Is the way to advance and go higher in the hierarchy.
But there is another way. Probably, not as easy, but much better because it does not compromise your values, who you are. And is the path of commitment, hard work, perseverance, and patient. Follow it. And in the end, you will have the peace of mind of knowing that you are doing the right thing.