Which of the following best defines secondary industries?

Secondary industries are best defined as those that are engaged in manufacturing goods from raw materials. This involves taking raw materials, which are typically sourced from primary industries, and transforming them into finished or semi-finished products through various manufacturing processes. This sector includes activities such as construction, food processing, textile production, and automobile manufacturing.

The characteristic of secondary industries lies in their role in adding value to the raw materials, thus facilitating economic development and job creation. This transformation can take place through physical manipulation of materials, assembly, or complex manufacturing processes. As such, secondary industries are crucial in providing the products necessary for consumer markets and other sectors, highlighting their integral role in the economy.