Correct Answer : Scene.addMesh()
Explanation : Scene.addMesh()function adds a mesh to the scene.
Correct Answer : Raycasting
Explanation : Raycasting is a method used in Babylon.js to identify the intersection of a ray and objects in the scene.
Correct Answer : registerAction
Explanation : With registerAction method an action is registered with the action manager.
Correct Answer : Clear
Explanation : Clear method, clears all actions that have been registered with the action manager.