Someone please help it is a test I need help with the question to me it is confusing

Which of the following is a likely reason that someone today might decide to move from a city in the midwest to the south? a. the decline of manufacturing in the midwest b. the many high tech jobs available in the south c. urban overcrowding in the midwest d. higher housing costs in the south

The mongols were descendants of a. pastoral nomadic tribes b. tibetan tribes c. shang nobility

There are no written records of the first migration of humans to the americas? true or false