Which of the Following Describes Longitude

Multiple Choice

Which of the following describes longitude?

A) Use plastic or conductive polymers instead of silicon-based microchips, allowing them to be washed or exposed to water without damaging the chip.
B) A device that measures the acceleration (the rate of change of velocity) of an item and is used to track truck speeds or taxi cab speeds.
C) A satellite-based navigation system providing extremely accurate position, time, and speed information.
D) An east/west measurement of position.