Which north changes its position slightly over the years?

Magnetic North is the correct answer because it refers to the direction that a magnetic compass points, which is towards the magnetic pole rather than true geographic north. The position of Magnetic North does change over time due to fluctuations in the Earth's magnetic field. These fluctuations can be attributed to movements in molten iron within the Earth's outer core, which causes the magnetic poles to shift both geographically and in terms of magnetic strength.

This change is significant enough that navigation systems must periodically update the location of Magnetic North to ensure accuracy in navigation. As a result, magnetic declination, which is the angle between True North and Magnetic North at a particular location, also changes over time and varies depending on where you are on the Earth.

Grid North, True North, and Relative North do not experience the same annual shifts. True North, which points toward the North Pole, and Grid North, relating to the grid system used in mapping, remain constant as they are fixed geographical references. Relative North is dependent on the direction one is facing and does not change over time.