Which of the following is an example of a supporting industry?

Transportation services are an example of a supporting industry because they provide essential infrastructure and logistics that facilitate the movement of goods and services across different markets. Supporting industries, often referred to as ancillary industries, play a critical role in enhancing the efficiency and effectiveness of primary industries, such as manufacturing or retail.

In this context, transportation services are integral to supply chains, ensuring that products reach their destinations on time and in good condition, which in turn allows other sectors of the economy, like retail and manufacturing, to operate smoothly. Without robust transportation services, industries would face significant challenges in distribution and supply management, affecting their overall productivity and service levels.

Other options, while important in their respective roles, do not primarily serve as supportive to the core functions of industries in the same way. Retail stores are directly engaged in selling products to consumers, manufacturing plants focus on producing goods, and financial institutions are primarily involved in providing capital and financial services rather than logistical support.