Final answer:
A planar projection is often used for maps of the world.
Step-by-step explanation:
The correct answer is world.
A planar projection, also known as a plane or flat map, is most accurately represented from its center. This type of projection is often used for maps of the world.
An example of a planar projection is the Mercator projection, which is a cylindrical map projection that preserves the shape of countries but distorts their sizes as latitude increases. It is commonly used for world maps.