Which source would be most useful for a student writing a paper that argues that the united states should eliminate political primaries?

In my perspective; A success History paper is clear, precise, consize, organized , analytical, and concrete. It uses the active voice; it has a thesis; it explains the significance of the topic; and it tells the reader who, what, when, why and how.

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a. r=d/t b. 800000/4=200,000 c.800/2=200 d.not sure km are used more often as theyre simpler to use but there is not much that i am basing this off of

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