Explanations:
उपरोक्त Passage के Sense के अनुसार दिये गये Question के लिये विकल्प "In primitive rural cultures" उपयुक्त है। "........ especially in conditions of civilization, where the hazards of traffic, electricity, gas, stains and many other complex dangers have been added to those which are found in primitive, rural circumstances ........." अत: विकल्प (b) correct answer है।