Choose the correct answer:In addition to ObjectFlow.

In addition to ObjectFlow, which is used to denote the flow of objects between activities in a UML Activity diagram, data movement can also be facilitated through:

A.Pin is a point on a node that is used to accept or provide objects or data, but does not move data by itself.

B.Correct. Variables can be used to hold and move data within an activity, facilitating state maintenance or transitions between different actions.

C.Property, while it holds data, typically pertains to classes or components, not activities.

D.ControlFlow dictates the order of execution but does not inherently move data.

References:

UML Specification: Activity Diagrams section.

Details on how data can be managed within activities can be explored in the UML 2.5 Documentation, particularly under Activity and Object Nodes.