The correct answer is B. Sometimes Enkai is Enkai Narok, the Black God, happy with us and blanketing the sky with dark clouds that pour out rain to nourish the plains.
Step-by-step explanation:
"The Beginnings of the Maasai" is a mythical text that focuses on describing the Maasai tribe in Africa and their relationship with their gods. This includes how gods affect different aspects such as weather.
An example of this is "Sometimes Enkai is Enkai Narok, the Black God, happy with us and blanketing the sky with dark clouds that pour out rain to nourish the plains" because, in this excerpt, the narrator refers to how god Enkai helps the tribe to nourish the plains through the rain. Additionally, this excerpt focuses on explaining rain as a natural phenomenon. According to this, it is excerpt B the one that explains weather and supports the conclusion one of the purposes of this mythical text is to explain the weather.