The note that expresses a general idea about a source is a _____.

critical
summary
paraphrase
direct quotation

summary

The note that expresses a general idea about a source is a summary.

The note that expresses a general idea about a source is a summary.

To arrive at this answer, let's break down the given options and understand what they mean in the context of expressing a general idea about a source:

1. Critical: Critical refers to an evaluation or analysis of the source, rather than simply expressing a general idea.

2. Summary: A summary is a condensed version of the main points or ideas of a source. It provides an overview without including all the details or specific language from the original source.

3. Paraphrase: Paraphrasing involves restating the information from a source in your own words while maintaining the same meaning. While it can be used to express a general idea about a source, a paraphrase typically involves a more thorough rewriting of the original content.

4. Direct Quotation: A direct quotation involves using the exact wording or language from a source, enclosed in quotation marks. While direct quotations can be used to convey a specific idea or point from a source, they do not provide a general overview.

Considering these definitions, it is clear that the note that best matches the criteria of expressing a general idea about a source is a summary.