Industries are defined by
a. what they produce
b. the types of jobs offered
c. the difference between jobs
d. wages offered to workers

A. What they produce

Explanation:

Industries are known to be group of companies which deal with the production of goods (products) and services. They make raw materials to pass through the production process and change them to specific goods. Also, they are categorized according to what they produce. For example: phone industries produces phones, pharmaceutical industries deal with the production of drugs, textile industries produces cloth and so on. Thus, these industries can be established by private sector or public sector.

there was no passage listed but using the process of elimination i'd say it was d. the high economy would do the opposite. i don't see how low prices would affect it. high unemployment is possible but i feel d is the better answer.