Which of the following are considered types of north in navigation?

• A. True North
• B. Grid North
• C. Magnetic North
• D. True North, Magnetic North, and Grid North

Answer: (D)

In navigation you work with three north references: True North is the geographic direction toward the North Pole; Grid North follows the map’s grid lines; Magnetic North is the direction a compass points, toward the magnetic north pole. These are distinct directions used in different navigation tasks, so the correct option is the one that lists all three. The other options mention only one type, which doesn’t capture all the ways north is referenced on maps and compasses. In practice, you may need to convert between them—grid north and true north differ due to map projection (grid convergence), and magnetic north changes over time with the Earth's magnetic field, requiring updates to declination.