The appropriate answer is a. The Tetons. Continental to continental plate collision occurs when continental crust comes together and compression and folding and faulting over time leads to the formation of extensive fold mountain ranges. The Appalachians, The Alps and the Himalayas were all formed at continental collision plate margins. <span />
An island is a piece of land surroinded by water. Hawaii and The Keys are examples
Glacial landscapes would have less erosion due to the colder climate and frozen water.