Final answer:
The correct answer to the question is C) Inter-sector system, referring to the integrated and interconnected operation of multiple sectors within a society's infrastructure.
Step-by-step explanation:
The question 'Components within an infrastructure system are part of a more complex system known as what?' is related to the understanding of interconnected systems within a society. The correct answer here is C) Inter-sector system.
Infrastructure components such as roads, bridges, water supply, and electrical grids are often part of a larger, more complex system that involves multiple sectors like transportation, public works, and utilities. These sectors must work together to ensure the infrastructure operates effectively, hence the term 'inter-sector.' This interconnectedness is crucial for the functioning of modern societies as it ensures a cohesive and efficient operation across different sectors.