Final answer:
Maintenance is not a major business function; it is considered a support function. Major functions include human resources, finance and accounting, manufacturing and production, and sales and marketing.
Step-by-step explanation:
Among the listed options, maintenance is not a major business function performed by an organization. The core business functions are typically defined as human resources, responsible for managing employee relations and development; finance and accounting, dealing with the management of a company's finances; manufacturing and production, which involves the creation of products or services; and sales and marketing, focusing on generating revenue through product sales and promoting the company's offerings.
Maintenance, while important, is generally considered a support function rather than a primary business function. Support functions are essential to keep the core functions running smoothly, but they do not usually drive the strategic direction of the company.