Select the incorrect statement. A. The true meridians at different places are parallel to each other. B. The true meridian at any place is not variable. C. The true meridians converge to a point in northern and southern hemispheres. D. The maps prepared by national survey departments of any country are based on true meridians.

The correct answer is C.

A true meridian is a line of longitude that passes through the North and South Poles. All true meridians are parallel to each other and are not variable. The maps prepared by national survey departments of any country are based on true meridians.

The Earth is a sphere, and all lines of longitude are parallel to each other. The North and South

Poles are the only points on the Earth where all lines of longitude meet.

The maps prepared by national survey departments of any country are based on true meridians. These maps are used for navigation, surveying, and other purposes.

The statement that is incorrect is C. True meridians do not converge to a point in the northern and southern hemispheres. They are parallel to each other and extend all the way around the Earth.