Correct Option: D Explanation of Why Option D is Correct: Infant industries refer to new or emerging industries that are not yet fully developed and may struggle to compete against established foreign competitors. The concept of protecting these industries is rooted in the idea that they need time to grow and mature before they can effectively compete in the global market.

1. Temporary Protection: Infant industries often require temporary protection from international competition to allow them to develop their capabilities, improve their production processes, and achieve economies of scale. This protection is typically provided through tariff barriers, which are taxes imposed on imported goods. By making foreign products more expensive, tariffs can help domestic industries gain a foothold in the market.
2. Maturity and Competitiveness: The goal of protecting infant industries is to enable them to reach a level of maturity where they can compete on equal footing with established firms from other countries. Once these industries have developed sufficient expertise, technology, and market presence, the protective measures can be lifted, allowing them to compete globally.
3. Economic Rationale: The rationale behind supporting infant industries is based on the belief that they can contribute to economic growth, job creation, and innovation. By nurturing these industries, a country can diversify its economy and reduce dependence on foreign goods.

Why the Other Options are Incorrect:

• Option A: A baby food and a baby clothing factories This option is too specific and does not capture the broader concept of infant industries. While baby food and clothing could be examples of products produced by infant industries, the term "infant industries" encompasses a wide range of sectors and is not limited to just these two categories. Therefore, this option fails to define the concept accurately.
• Option B: Those which are introducing new products While it is true that infant industries may introduce new products, this definition is too vague and does not specifically address the need for protection and development. Not all new products come from infant industries; established companies can also introduce new products. Thus, this option does not adequately describe the unique characteristics of infant industries.
• Option C: Cases of arrested development This option implies that infant industries are stagnant or failing to grow, which is not necessarily true. Infant industries are in a phase of development where they are expected to grow and mature with the right support. The term "arrested development" suggests a negative connotation that does not align with the purpose of protecting and nurturing these industries.

Summary of Key Points:

• Definition: Infant industries are new or emerging industries that require temporary protection to develop and compete effectively.
• Protection Mechanism: Tariff barriers are commonly used to shield these industries from foreign competition until they mature.
• Economic Importance: Supporting infant industries can lead to economic growth, job creation, and innovation.
• Misconceptions: Not all new products or industries are considered "infant," and the term does not imply failure or stagnation.

This thorough understanding of infant industries will help you grasp their significance in economic policy and development strategies.