What concept describes the relationships between entities in a way that abstracts their structural connections?

The concept that describes the relationships between entities while abstracting their structural connections is accurately identified as a proposition. In this context, a proposition serves as a statement or assertion that can express a relationship between various entities, encapsulating the essence of their connections without delving into the specifics of their structural components.

Propositions are foundational in both logical and philosophical discussions, where they function to convey meaning and illuminate how different subjects relate to one another. This abstraction allows for a clearer understanding of the underlying relationships without getting bogged down by the complexities inherent in their individual structures.

The other options do not align with this concept as precisely. A procedure typically refers to a specific method or process for doing something, which does not focus on relationships but rather on actions. Production relates more to the creation or manufacturing aspect of entities rather than their relational dynamics. Condition suggests a state or requirement influencing something but does not encapsulate the abstract representation of relationships between entities.