What represents how critical a person's job is in relation to others' tasks?

The concept of centrality refers to the extent to which a person's job or role is pivotal within the network of tasks and relationships in an organization. Centrality illustrates how connected and influential an individual is by highlighting the importance of their position in coordinating and facilitating the work of others. A person in a central role often has access to a significant flow of information and resources, making their contributions critical to the overall functioning of the organization.

In essence, a job with high centrality means that the individual is integral to the organization’s operations—without them, the workflow is likely to be disrupted, and tasks may not be completed efficiently. This contrasts with the other terms, which focus on different aspects of organizational dynamics. For example, visibility refers to how much recognition or attention a person's work receives, substitutability speaks to how easily someone could be replaced in their role, and expert power deals with the influence that comes from possessing specialized knowledge or skills. Centrality captures the relational and functional importance of a job in connection to others, making it the correct answer in this context.