Altimeter: height (analogy)

Explanation

A. Speedometer: speed - This analogy is correct because a speedometer is an instrument that measures and displays the speed of a vehicle. Similarly, an altimeter is an instrument that measures and displays the height or altitude of an object or location.B. Racetrack: furlong - This analogy is incorrect. A racetrack is a specific type of track or course where races are held, typically for horse racing or motorsports. On the other hand, a furlong is a unit of measurement used in horse racing and other sports to denote a specific distance. The analogy between a racetrack and a furlong doesn't hold because a racetrack is a location where races take place, whereas a furlong is a unit of distance.C. Observatory: constellation - This analogy is incorrect. An observatory is a location or facility equipped with telescopes and other instruments for observing celestial objects and phenomena. Constellations, on the other hand, are patterns of stars as viewed from Earth. While observatories may study or observe constellations, they are not directly analogous to each other.D. Vessel: knots - This analogy is incorrect. A vessel is a general term used to refer to any type of ship, boat, or other watercraft. Knots, on the other hand, are a unit of measurement used to determine the speed of a vessel or aircraft. While knots are often associated with vessels, they are a measurement of speed rather than a physical object like a vessel.In summary, option A is the correct analogy, while options B, C, and D are incorrect.