if the of the ray increases as it crosses the boundary then the path of the ray in the new medium will be most likey toward which of the following points

Ithink d is the right answer. hope this !

Is this a question of an answer

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.