Select the option that can be used as a one-word substitute for the given group of words. The study of population and its dynamics

Explanation

The correct answer is: Demography Key Points Demography means the study of statistics such as births, deaths, income, or the incidence of disease, which illustrate the changing structure of human populations. (जन्म, मृत्यु, आय या बीमारी की घटनाओं जैसे आंकड़ों का अध्ययन, जो मानव आबादी की बदलती संरचना को दर्शाता है) So, it is clear that 'Demography' can be used as a one-word substitute for 'The study of population and its dynamics' Therefore, the correct answer is option 2 . Additional Information Democracy means a system of government by the whole population or all the eligible members of a state, typically through elected representatives. (आमतौर पर निर्वाचित प्रतिनिधियों के माध्यम से पूरी आबादी या राज्य के सभी पात्र सदस्यों द्वाारा सरकार की एक प्रणाली) Dysgraphia means inability to write coherently, as a symptom of a neurological condition or as an aspect of a learning disability. (एक तंत्रिका संबंधी स्थिति के लक्षण के रूप में या सीखने की अक्षमता के एक पहलू के रूप में सुसंगत रूप से लिखने में असमर्थता) Dermatology means the branch of medicine concerned with the diagnosis and treatment of skin disorders. (त्वचा विकारों के निदान और उपचार से संबंधित दवा की शाखा)