Concept:
A supply chain represents the complete flow of materials, information, and services from raw material sourcing to final consumption, involving multiple interconnected activities.
Step 1: Understand supply chain nature.
It includes:
• Procurement
• Production
• Distribution
• Market delivery
Step 2: Interpret meaning.
A supply chain is not just physical units but a continuous sequence of activities and events.
Step 3: Final conclusion.
\[
\boxed{\text{Events in the market process}}
\]
Thus,
\[
\boxed{\text{Option (D) is correct.}}
\]