The question requires understanding the structure of a paragraph discussing benefits and drawbacks. 'A. Compare and Contrast' is the correct answer because it involves discussing the similarities and differences between two subjects, which in this case are the benefits and drawbacks. 'B. Problem and Solution' focuses on identifying a problem and proposing a solution, 'C. Cause and Effect' explains why something happens and what the result is, and 'D. Definition' provides the meaning of a term or concept. These structures do not fit the description of discussing benefits and drawbacks.