This book contains model answers to the questions and case studies asked in General Studies-IV (GS-4) Civil Services Mains Paper from 2013 to 2019 with detailed information on the background/framework of the question/likely answer. It is important to note that as a subject in Civil Services Examination, GS-4 is the only subject where we have comparatively well defined syllabus and paper pattern. Because of this, each individual can score good marks in the paper with lesser efforts as compared to other General Studies Papers, i.e. if you dedicate 15-20 days to this subject, you will not just learn about the complete subject but you can score much more as compared to other General Studies paper, as they require much more time because of their dynamic nature. If we consider the previous year question Papers of General Studies-IV, the questions were divided into two parts as: 1. Theory-based Questions (based on the theoretical aspects of the ethics), and 2. Case Studies (based on the actual or probable life situations). The answers are divided into two portions with first one detailing about the framework of the answer or background of the question, giving details about the basic idea of the question or the form of case study. The second part is the model answer giving wider inputs on the question. We hope that wider considerations will help the reader in understanding the question and how to structure the answer, based on the question.