"The Beginnings of the Maasai" is a myth about how the indigenous ethnic group of Africa originated, and how the settled in Kenya and Northern Tanzania.
"Now Enkai lives at the top of Mount Kenya, and we Maasai still live below, herding cattle down in the plains." is the sentence that contains the most elements of a final summary out of the excerpt provided in the question. It is the best option out of all, because it gives a sense of closure to the tale, explaining where are they located, and how they are still in possession of their cattle.