Infrastructure typically refers to the fundamental facilities and systems that support the functioning of a community or society. This includes physical structures like roads, bridges, buildings, and utilities, as well as systems like transportation networks and communication technologies.
Let's evaluate each option based on this definition:
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Coffee, cotton, and tea crops: These are examples of agricultural products and not infrastructure. They are outputs of the agricultural sector rather than the systems that support agriculture.
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Oil refinement and health care: Oil refinement can be considered part of industrial infrastructure, as it involves facilities and processes that are essential for processing crude oil into usable products. Health care can also be viewed as infrastructure in terms of the facilities (hospitals, clinics) and systems (public health management) that support the health of a population.
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Local and national politicians: Politicians themselves are not infrastructure. They are individuals who may influence infrastructure development and policy but do not constitute infrastructure.
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Institutions, administration, and education: These can be considered part of social infrastructure. Institutions and administrative systems support governance and civil society, while educational institutions contribute to the development of human capital and knowledge within a community.
From this evaluation, oil refinement and health care and institutions, administration, and education can be considered examples of infrastructure, while the other two options do not fit this definition.