The correct option of countries frequently mentioned in media for low birth rates and ageing populations includes Italy, Japan, and South Korea, as these nations face significant demographic challenges that impact their economic and social structures. Italy and Japan have some of the lowest fertility rates globally, contributing to a rapidly ageing population that poses challenges for pension systems and workforce sustainability. South Korea, similarly, has seen a marked decline in birth rates, attributed to socio-economic factors such as high living costs, extensive work hours, and shifting societal norms regarding family and child-rearing. These trends reflect broader themes in demographic studies, such as the economic implications of an ageing population and the societal changes that influence family planning decisions, making them pertinent topics for UPSC Prelims GS Paper I.