1. An adage is D. A short saying that expresses a general truth.
2. In the introduction of an opinion essay, the following item belongs: B. Controlling idea.
3. The adage or proverb that two heads are better than one means that B. It is useful to have advice and ideas from others.
A controlling idea is the main idea, claim, thesis, or a writer's definite opinion or attitude about the topic.
The controlling idea shows the writer's or speaker's position on a given topic.
Thus, in an argumentative or opinion essay, the controlling idea must be present.
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