The Indian Removal act was harsh because many native Americans were forced out of their homes and to a small are when they actually were supposed to own all of it. Another reason it was harsh was because many of them died because of no food, poor living conditions and some of the were simply not fit to make the move.
The answer is B. It created unnecessary projects just to employ people.
They were similar because with olfactory lethargy you have a delay in detecting a new smell because your receptors are overworked from a previously heavy smell, the same thing appear with afterimage, you stare at a color and your cones become lethargy, thus showing an afterimage of another color. they were contrasting because one deals with olfactory bulbs and the other deals with occipital lobes and optic nerves.