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.

answer; is usually (less than) the socially optimal level of consumption;

(i know i'm late but the answer's "things about yourself" because you want to list things you're capable of, why you want to open up the business, the amount of money you're putting into it,etc.) i'm guessing you take online school small business, the answers to the quizzes are all over quizlet. just look up your question and type quizlet after it and it'll pop up.