Use the arrow tool to select entire objects by clicking them or by dragging to enclose them within a rectangular selection marquee.
Note: To select the arrow tool you can also press the A key. Temporarily switch to the arrow tool when another tool is active by holding down the Control (Windows) or Command (Macintosh) key.
To select a line, shape, group, instance, or type block:
Select the arrow tool and click the object.
To select connected lines:
Select the arrow tool and double-click one of the lines.
To select a filled shape and it's stroked outline:
Select the arrow tool and double-click the fill.
To select objects with a rectangular area:
Select the arrow tool and drag a box (marquee) around elements with the arrow tool. Instances, groups, and type blocks must be completely enclosed to be selected.