The author most likely begins and concludes the passage with questions for what reason?

A. To suggest possible areas for current and future research

B. To pose a question that is answered in the body of the passage, and then to formulate a question that arises naturally out of the discussion

C. To gain the readers’ attention and encourage their agreement with the arguments in the passage

D. To suggest through rhetorical questions that the problems described in the passage do not actually have answers

E. To test the readers’ knowledge of the material discussed in the passage