How do the physical properties of a substance compare when you have two different sized samples of the same substance? - i need serious help because i cant make sense of this question

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

the answer is option a.