Final answer:
The correct answer is 'Factory manager' as it is a line position directly involved in the manufacturing process of a company, contrasting with staff positions such as human resources, accounting, and finance. Option d.
Step-by-step explanation:
In a manufacturing company, a line position generally refers to a role directly involved in the core operations that contribute to the production of goods or services. When we look at the options provided: Chief accounting officer, Vice president of human resources, Treasurer, and Factory manager, the Factory manager option d, is the correct answer. This position is directly responsible for managing production and ensuring that goods are manufactured efficiently. This role contrasts with the other positions listed, which are more likely to be considered staff positions, providing support, advice, and services to line positions. For example, human resources would manage personnel and training, a chief accounting officer would handle financial reporting, and a treasurer would manage the company's finances.