8. In the above map (attached image) what will happen in 500,000 years to the area between the red arrows?

a. The area will widen.
b. The area will flatten
c. The area will disappear.
d. The area will become a glacier.

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?