With Box Select 
, drag to draw a rectangle around the area you want to select. Only objects that are completely enclosed by the selection line are selected.
Select Box Select
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In the toolbar, click Box Select
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Choose Edit > Box Select.
Select an Area with Box Select
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In the toolbar, click Box Select
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Drag to draw a rectangle around the area you want to select.
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Lift the pen or release the mouse when the required objects are enclosed. They become the current selection, as indicated by a rectangle with handles.
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If you want to make a new selection, draw a new box around the required objects.
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Control–click and select Finish Box Select to cancel the Box Select tool.
Note: Use Command–click to add or remove an area to your selection.
Note: Use Add to Selection 
with any select function to increase the area of selected objects, or use Remove From Selection
to make the currently selected area smaller.