Which is not a reason why few early south american peoples created large scale civilizations?

a)it is hard to unite people separated by dense forests b)the landscape of the continent is very rugged c)there are very few resources on the continent d) people lived great distances apart from one another

Einar sees alexandra every day across the room in his history class but has never talked with her. einar likes the way alexandra looks, including the way she dresses and how she wears her hair. he's even more attracted to her apparent intelligence and the way she handles herself in class discussions and during interactions with the instructor. he'd like to know more about her, so he asks one of his friends about her. einar, using a passive strategy to gain information about her, is probably in the preinteraction awareness stage of any relationship that might develop between them. t/f