Final answer:
A mouse is the device that allows users to select objects and issue commands on a computer by moving a pointer on the screen and performing actions like clicking and dragging.
Step-by-step explanation:
The device that enables you to select objects and issue commands is a mouse. A mouse is a hand-held pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of a pointer on a display, allowing for fine control of a graphical user interface. With a mouse, users can perform actions such as clicking, dragging, and dropping to interact with software applications and select objects on the screen.