Answer:
C). "Ancient Greek People and Their Rulers," an article in an academic encyclopedia
Step-by-step explanation:
As per Ellie's reading purpose, the most appropriate text would be the "article titled 'Ancient Greek people and their ruler' in an academic encyclopedia" as it will provide her broad, high-quality, and authentic information regarding the administration in ancient Greece. Encyclopedias are recognized as one of the most reliable sources to provide authentic and unbiased information on a wide range of topics and an article included in it regarding the ancient Greek rulers, their administrative system, people, and their role in the administration, etc. which help in accomplishing her research for her paper effectively. Thus, option C is the correct answer.