The answer is c - surrounded by mountains
The Battle of Fallen Timbers was the last battle of the Northwest Indian War, a struggle between Native American tribes fighting with the Western Confederacy, including minor the indians had some minor support from the brittish
He's showing a lack of conservation which means he's unable to understand that the quantity is the same after it underwent a shape transformation.
They manipulated the length of time between seeing and recalling sets of 3-letter stimuli while preventing rehearsal.