Question

Which choice is common knowledge and could be used in a research paper without crediting the source? A. financial data published in the newspaper B. the freezing temperature of water C. the copyrighted blueprint for a building D. the opinion of a citizen

Answer 1

I want to say the answer is B The freezing temperature of water. 

The reason being, is many people know, the freezing temp, or around it, without having to look it up. So its known as "common knowledge".

In order for a newspaper to publish something from another source, they must give credit to the one who said, came up with it ect.

A copyrighted blue print, is copyrighted so right there it has the credit of the one who did it somewhere on there.

the opinion of a citizen even if it is not specific who was to say it, they must publish their words to "citizen" in general.

 

Answer 2

Answer: B. the freezing temperature of water.

This is the option that can be considered common knowledge. The author of a piece that contains this information does not need to provide his source, because he can assume most people would be aware of this information. If a reader is not aware of it, he can look it up, and as there is consensus on this piece of information, he will find the same information in a variety of easily accessible sources.