In the following questions, you have a brief passage with 5 questions. Read the passage carefully and choose the best answer to each question out of the four alternatives.

Geography forms a part of social sciences and is one of the fields which is now heading towards a scientific form. Change is the law of nature and is also the fundamental of development and progress. Geography has passed through many stages and it was only in 1905 that geography was accorded an important place in the curriculum. Prof. A.Z. Herbertson contributed a lot in this development of geography. Nowadays geography means description of earth. Since earth is full of various things which could not be studied in isolation, it is quite difficult to describe everything we find on earth. Thus to overcome these difficulties certain principles have been formulated. These days an attempt is made to study earth as the home of man. Keeping this in view Prof E.A. Macnee has defined geography, “so, to give more explicit definition, Geography is the study of earth as the home of man or in other words geography is the study of the environment of man; physical, social, particularly in its relation to human activities”. Prof. J. Fairgrieve defines Geography as, “The function of geography is to train future citizens to imagine accurately the conditions of the great world stage and so to help them to think safely about political and social problems in the world around”.

Complete the sentence. Geography is a function of _____.