Final answer:
Build-versus-buy decisions in a PC context apply to software and service decisions while the most important commodity in a postindustrial society is information.
Step-by-step explanation:
The build-versus-buy decisions in the context of a PC primarily apply to software and service decisions. This means that when setting up a PC, a person or organization needs to decide whether to create custom software solutions in-house (build) or procure software from external sources (buy). This decision is critical since it can impact the efficiency, performance, and financial resources of the user or organization. A human factors psychologist would be concerned about the height of the office chair for ergonomic reasons.
Regarding the other question, the most important commodity in a postindustrial society is c. Information. Information is the key driver of such a society; it affects economic activities, innovation, and the social landscape. As for what a human factors psychologist would be concerned about in an office workstation, the a. height of the chair is pertinent because it directly affects the comfort and productivity of the worker, as well as their physical health.