Final answer:
The sentence that best reflects the author's purpose in literary history is: "The text also shows emerging evidence of the writer's intent to meet or challenge conventional expectations in rhetorically effective ways."
Step-by-step explanation:
The sentence that best reflects the author's purpose in literary history is: "The text also shows emerging evidence of the writer's intent to meet or challenge conventional expectations in rhetorically effective ways." This sentence suggests that the author is interested in exploring new perspectives and ideas within the field of literary history. It indicates that the author is not simply following traditional norms, but rather pushing boundaries and sparking discussion.