The question asks to identify the branch of economics that focuses on the important issues of the depletion of natural resources and pollution, which are direct outcomes of rapid economic development activities.

Understanding Environmental Economics and Resource Depletion

Economics is a broad field with many specialized branches. Each branch focuses on different aspects of economic activity and its consequences. Let's look at the options provided and see which one best fits the description in the question.

• Developmental Economics: This branch studies economic issues in developing countries. It often deals with growth strategies, poverty reduction, income inequality, and structural change. While development can impact the environment, environmental issues are not the sole or primary focus of this branch.
• International Economics: This branch deals with economic interactions between countries, such as international trade, foreign investment, exchange rates, and international financial markets. It does not primarily focus on domestic environmental issues like resource depletion or pollution within a country resulting from its own development.
• Environmental Economics: This branch of economics specifically studies the interrelationship between the environment and the economy. It analyzes how economic activities affect the environment and how environmental quality, in turn, affects the economy. Key topics include market failures related to environmental issues (like pollution as an externality), resource depletion, valuation of environmental goods and services, and the design of environmental policies (like taxes, permits, regulations) to address environmental problems resulting from economic growth and development. This branch directly addresses the concerns raised in the question: the depletion of natural resources stock and pollution caused by economic development.
• Public Economics: This branch analyzes the role of the government in the economy. It covers topics such as taxation, public expenditure, public goods, externalities, and government regulation. While environmental issues like pollution are considered externalities and are addressed by government policy (which falls under Public Economics), Environmental Economics is the more specific field dedicated to the economic analysis of environmental problems themselves.

Based on the description, the branch of economics that specifically deals with the depletion of natural resources stock and pollution as results of economic development is Environmental Economics.

Therefore, the branch that directly addresses the economic aspects of environmental degradation and resource depletion linked to economic progress is Environmental Economics.

Revision Table: Key Concepts in Environmental Economics

Additional Information: Environmental Issues and Economic Development

Economic development often involves increased industrialization, resource extraction, and consumption, which can lead to significant environmental challenges. These include air and water pollution, deforestation, loss of biodiversity, climate change, and the exhaustion of non-renewable resources. Environmental economics uses economic principles to understand why these problems occur (often due to market failures where environmental costs are not reflected in prices) and to design effective policies to mitigate them. Policies can include market-based instruments like carbon taxes or cap-and-trade systems, as well as command-and-control regulations.