Physicists seek out those features of nature that are simple and universal. The secret of their success is not so much a matter of finding answers as it is asking the right questions. The trick is keeping the questions simple and sticking to universal phenomena. Simple questions can be answered unambiguously by careful observation of repeated experiments and by logical thinking. Which of the following questions is most clearly an example of the kind discussed in the paragraph?
A) What are the complex and unique aspects of nature?
B) How can we complicate our understanding of natural phenomena?
C) Why do some experiments lead to ambiguous results?
D) What simple and universal features characterize nature?
