According to the reading, what 3 solutions to urban growth did Portland, Oregon implement? unrestricted urban growth, construction of highways, suburban development urban growth boundaries, construction of highways, mixed-use development urban growth boundaries, public transit system, mixed-use development unrestricted urban growth, construction of highways, mixed-use development c​

Idon't  see a map but it goes to d.christianity with about 2.1 followers today

The highest point of a hill (or mountain) is a single point.
a single point can only be precisely marked with a dot. 
putting on a contour line is impossible  on a single point because the contour line is created after multiple points that have the same hight are marked, and after that, all of those points are connected with a line that creates a closed area. so the highest point, as said above, is a single point, there are no other points with the same height, so the only possible way for it to be marked is with a dot, and there is no possibility for a contour line.