For all their married life, joshua and lily wellcomb lived in a small town in kansas, where they just managed to feed themselves and their three children. in 1888, joshua died from influenza, leaving lily with three children to look after. the family was left with very little money, so when the oklahoma land run was announced in march, lily had a difficult decision to make. she thought about it for a long time, then she sat her children down at the kitchen table in their tiny house.

what is the purpose of this narration?

(a) to provide a detailed description of a specific event
(b) to provide a history of land runs in the united states
(c) to show how a character completes a difficult task
(d) to provide the wellcomb family’s backstory

D, you can tell because this paragraph is all about the background on them and not about HOW she COMPLETED the task. She hasn't completed the task yet.

D) to provide the Wellcomb family’s backstory.

Explanation: when writing, an author can have different purposes, like for example: to entertain, to persuade, to criticize or to inform. From the given options, the one that represents the purpose of the narration is the corresponding to option D: to provide the Wellcomb family's backstory, we can see that in the description of where Joshua nad Lily Wellcomb lived, how he died and the difficulties Lily and her children went through.

the krebs cycle and electron transport occur in the mitochondria, though other than that i would need to know more information.

i would say the answer is erm c but if you dont agree im so sorry