(1). Hard drives in laptop/notebook computers are said to be 2.5 inches. This is because _____. (a). The heads move in approximately a 2.5" arc (b). The platters have a diameter of approximately 2.5" (c). The physical size of the drive is approximately 2.5" x 2.5" (d). The diameter of the inner-most track is approximately 2.5" (2). Batteries used in modern laptops are _____. (a). Ni-cad (Nickel-cadmium) (b). Ni-MH (Nickel-metal hydride) (c). Li-ion (Lithium-ion) (d). Lead-acid (e). Lithium (3). Surge suppressors protect electronic equipment, such as computers, from which two of the following conditions. (a). Blackouts (b). Brownouts (c). Spikes (d). Surges (e). Low frequency (f). High frequency