单项选择题

To most people, common sense means the ability to present sound, practical judgments on everyday affairs. To do this, one has to sweep aside extra ideas and get right to the core of what matters. A Texas oil and gas businessman puts it this way. "The key ability for success is simplifying. In conducting meetings and dealing with business matters, reducing a complex problem to the simplest term is highly important."
Is common sense a quality a person is born with, or can you do something to increase it The oil man’s answer is that common sense can definitely be developed. He attributes his to learning how to debate in school. Another way to increase your store of common sense is to observe it in others, learning from their—and your own—mistakes.
Besides common sense, there are many other factors that influence success: knowing your field, self-reliance, intelligence, the ability to get things done, leadership, creativity, relationships with others, and, of course, luck. But common sense stands out. If you develop these qualities, you’ll succeed. And you might even find yourself listed in Who’s Who someday.

It can be inferred from the passage that a successful businessman（）

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