In mostenterprise and BPM frameworks, including those aligned withOMG value chain and BPMN modeling, organizational functions are split into:

Primary (core) activities– directly create value for the customer (e.g., operations, marketing & sales, service).

Support activities– enable and support the core, but do not directly deliver the product/service to the customer (e.g., HR, accounting, IT, procurement).

Among the options:

Human resourcesis classically modeled as asupport function:

It providesrecruitment, training, development, performance management, and policy support.

In OMG-based enterprise models, HR is often shown as ashared service or support processthat other processes call upon (e.g., “Hire employee,” “Onboard staff,” “Manage skills and competencies”).

Why the others are less appropriate astheanswer:

A. Marketing– Typically considered aprimary/value-creating function, directly involved in demand creation, customer communication, and revenue generation.

B. Accounting– Also a support function in many models, but in value-chain diagrams and BPM teaching examples,HR is the most universally and explicitly labeled as “support”.

D. Research and development– Often consideredtechnology development; in some value chains it’s a support activity, but in many industries (pharma, tech, engineering) it is acore strategic function.

Therefore, the functionmost generally and clearly considered a support functionin BPM and OMG-aligned organizational modeling isHuman resources.