The correct answer is D. Commercial industry.
Explanation
A production system is a term to refer to a set of operations that allow the manufacture of an object or the provision of a service. In general, companies have a production system to become more efficient and provide the best service to their users, an example of this is the commercial industry that is characterized by focusing on mass production to constantly supply the demand of its goods and thus earn money, this is because when it is produced in mass, everything is usually cheaper this includes labor, materials and the use of machinery. So, the correct answer is D. Commercial Industry.
True they were but their family probably wasn’t
I think it's A. Hope this helps!
Second Sino-Japanese War, (1937–45), conflict that broke out when China began a full-scale resistance to the expansion of Japanese influence in its territory (which had begun in 1931).
