At a certain time of day, the angle of elevation of the sun is 70°. To the nearest foot, find the height of a tree whose shadow is 43 feet long.

Intrusion is the best answer and the newest form.

Most of the land is used for housing/commercial uses

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.

the answer is d. andesite. diorite and andesite have similar chemistries.

the other choices are wrong because:

basalt and gabbro have similar chemistries

granite and rhyolite have similar chemistries

pumice is just a rock that goes with no one

so the answer would be d. hope this