Pick > Object
Picks or unpicks one or more objects.
Pick Object Options
Filter unpickable layers
If this option is selected, objects in inactive or reference layers are not picked when they are grouped below the selected object(s) in the DAG hierarchy.
If any descendants of a node are on an unpickable layer, the system de-selects the original node(s) and selects all the pickable nodes on the level below. It continues the process until all pickable descendants of all selected nodes are found.
By default, Filter unpickable layers is not selected, and Pick > Object 
ignores layer state attributes.
Note:
Filter unpickable layers affects only modeling windows. In the SBD window, components are picked whether a layer is inactive layer or not.