Which of the following is a composite element?

This is because a grouping is a composite element that aggregates or groups other elements based on some common characteristic or purpose. A course of action is a motivation element that represents an approach or plan for achieving some goal. An aggregation is a structural relationship that models the whole-part hierarchy between elements. A contract is a passive structure element that represents a formal or informal specification of an agreement between a provider and a consumer that specifies the rights and obligations associated with a product or service.

ased on the ArchiMate 3 documents or objectives, a grouping is a composite element that consists of other concepts, from one or more aspects or layers of the ArchiMate language. A grouping can be used to model a logical or physical grouping of elements that belong together based on some criteria. A grouping can itself aggregate or compose other groupings, leading to a hierarchy of these elements.

References: ArchiMate® 3.2 Specification, Chapter 4 Generic Metamodel, Section 4.1 Behavior and Structure Elements, Subsection 4.1.5 Composite Elements 1; Composite Elements | Enterprise Architect User Guide 2.