Answer:
A. If the point is outside the contour line, it is lower than the line. If the point is inside the contour line, it is higher than the line.
Step-by-step explanation:
A contour line is a two variables function, applied in topography to show different heights in a field. The image attached shows a 2D perspective a surface, the lines are contour lines.
So, as you can see in the image, inside the ''circles'' is higher that outside the circles, giving and nice perspective to the eye.
Furthermore, there are rules to contour lines, one of them says: ''Contour lines close to form circles and the inside of the circle is the top of a hill''. Which gives us the answer.