Why Correct: India follows a mixed economy model where both public and private sectors coexist, with state intervention in strategic areas and market forces elsewhere.
Distractor Analysis: A totally command economy with no private sector describes the former Soviet model. A capitalist economy is market-driven with minimal state intervention, unlike India's approach.
Takeaway: Mixed economy combines elements of socialism and capitalism; India adopted this model post-independence with planning and private enterprise.

Why Correct: Capital is a produced means of production—goods such as tools, machinery, and factories that are themselves manufactured and then used to create other goods and services. This distinguishes it from natural resources, which exist without human effort.
Distractor Analysis: Money functions as a medium of exchange, store of value, and unit of account; it is not itself a productive input. Machinery and buildings are physical capital, but they are only one category of capital, not the full definition. The statement that capital is produced by the means of production accurately captures the economic definition, so its denial is false.
Takeaway: In national income accounting, capital formation includes gross fixed capital formation, changes in inventories, and net acquisition of valuables.

Why Correct: Variable cost rises directly with the level of output because it includes expenses on raw materials, direct labor, and energy that increase as production expands. In the short run, total variable cost (TVC) is a function of quantity produced, TVC = f(Q), and it increases continuously as output rises.
Distractor Analysis: Fixed cost remains constant in the short run regardless of output, covering expenses like rent and salaries of permanent staff. Average cost, which equals total cost divided by output, typically falls initially due to economies of scale, then rises after reaching a minimum point, so it does not increase continuously. Marginal cost, the change in total cost from producing one more unit, can decline at first because of increasing returns to scale, then rise due to diminishing returns, so it is not continuously increasing.
Takeaway: In the short run, total variable cost increases with output, but average variable cost may initially fall due to increasing returns, then rise; the U-shaped average cost curve is a standard exam concept.

Why Correct: Erich W. Zimmerman propounded the Functional Theory of Resources, emphasizing that resources are not static but become resources through human function and technology.
Distractor Analysis: Alfred Weber is known for the theory of industrial location. Wagener is associated with agricultural location theory. David Harvey contributed to urban geography and Marxist geography.
Takeaway: Zimmerman's functional approach views resources as dynamic, acquiring value through human needs, technology, and culture.