The correct answer is - scale, legend, title, and compass.
All of the maps have some basic things that are the same, but also, depending on the purpose of the map, they have special things on them.
The things that are in common to all the maps are the scale, legend, title, and compass.
The scale has the purpose to show the user what is the distance on the map compared to the distance in real life.
The legend pinpoints the most important objects on the map.
The title tells the user what the map is about.
The compass is showing the directions on the map.
