The definition of a fix includes that it is established at a specific time and to a high degree of accuracy. Which pair completes this statement?

• A. Time, Accuracy
• B. Distance, Precision
• C. Latitude, Longitude
• D. Speed, Reliability

Answer: (A)

A navigational fix is defined by when the position is determined and how precisely that position is known. The moment the position is established is recorded as a specific time, and the position is stated with a clear level of accuracy. So the pair that completes the statement is Time and Accuracy. In practice, you’ll hear it described as a position established at a specific time and plotted to a given accuracy, which lets you anchor the fix in time for plotting and understand how certain the position is. The other options don’t fit because distance isn’t about timing or certainty, latitude and longitude are the coordinates themselves rather than how the fix is defined, and speed is unrelated to the standard description of a fix’s timing and accuracy.