Socrates liked to pose questions to people in order for them to figure out the answer by themselves. They were leading questions so it would prompt thought in the student who eventually would arrive at their own conclusion. He himself felt he had no ideas and felt it wise to understand he was ignorant about many things. In order to gain higher knowledge he promoted asking a lot of questions. In teaching today mostly straight didactic method used where a student sits and listens to a teacher ramble on and on about their chosen subject. It's easy to doze off in class because you lose interest unless you get to instead ask a lot of questions and get involved in the subject and start getting revelations about the subject matter.
The population of Oregon which is given above may also be expressed in scientific notation as, 4 x 10^6 The magnitude of this number is the exponent of 10 in the scientific notation. Thus, the answer is letter "B. 6".
