Which geodatabase element models the flow of resources like water or electricity?

The geodatabase element that models the flow of resources such as water or electricity is a geometric network. This type of network is specifically designed for tracing and modeling utility systems, where the flow direction and connectivity between points are crucial for analyzing how resources are distributed and how they interact with one another.

A geometric network allows users to represent the physical connections and flow properties of utility infrastructure, making it ideal for tasks such as finding the most efficient path for resource distribution, assessing the impact of changes in the network, and performing network tracing to identify issues like leaks or outages.

In contrast, a line feature class typically represents linear features but does not inherently model flow dynamics. A network dataset focuses on transportation networks and their associated costs and impedances for movement rather than resource distribution. A triangulated irregular network, while useful for modeling terrain and elevation, does not deal with flow dynamics in utility systems. Therefore, the geometric network is the correct choice as it is tailored for analyzing and visualizing the flow of resources.