How to connect a visual object in Three.js to a physical object in a physics library?

Question

How is the connection made between a visual object in Three.js and a physical object in a physics library?

Accepted Answer

By copying the properties of each physical object to its counterpart in three.js at each frame.

Answer

By passing the objects from three.js as parameters during the initialization of the physics world.

Answer

By giving the same name to the objects in three.js and the physical objects, the physics libraries internally manage the connection.

Answer

With a constant reference system.

Question from the Threejs test