I believe the answer is Panel discussion because if you take out the moderator out of a panel discussion it becomes a roundtable
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Answer: D. A theme is revealed by characterization or plot, while a central idea is revealed by rhetoric or a direct statement.
A theme is the central topic of a text. It is created through the plot (events of the story), the characters and the setting of the story.
A central idea is the main point that the story wants to convey. It is usually revealed directly, or by using methods of rhetoric and persuasion. Narratives are built in a way that support the central idea.
Numerous is plenty
pedestrian is walker
liberty is freedom
enumerate is restate
pedal is foot bar
liberal is generous