[Solved] The number of companies using social networking sites to promote their product and services ____ increasing. A)is B)are C)were Slide Clips: Small devices or tools designed to hold slides (transparencies) in place during a presentation or viewing session. Microscope: An instrument used to magnify and examine objects that are too small to be seen by the naked eye. Revolving: Moving in a circle around a central axis or point, commonly used to describe doors, credit, or the motion of certain objects. Adjustment Control: A mechanism or process used to regulate or guide the operation of a device, system, or process to achieve desired outputs.