Which action should you never take when selecting quotations?

choosing the fewest words needed

changing the meaning of the quotation by changing the context

quoting long passages (block quotations) rarely

adjusting the sentence to fit the grammar of the quotation

The correct answer is changing the meaning of the quotation by changing the context

This is basically how wrong interpretations are made. When people do things like this they misinterpret what the person was trying to say, which is why some theoreticians acuse philosophers like Plato of being fascist, even though he clearly was not. You shouldn't change the meaning of it.

The second choice. you should never take the original author's words out of context to fit your purpose as a writer; quote their words objectively, or find a different author to quote. it's perfectly alright, and even encouraged, to choose the fewest words possible to get the needed information from a quote. block quotations are alright so long as they're properly cited and used rarely; if an entire work is made up of block quotes, it's hardly your work because all you're doing is displaying someone else's writing. when quoting from someone else, you are supposed to adjust your sentence to fit the grammar of the quotation; either that, or you adjust the grammar of the quotation using the square brackets to show that you put something in that wasn't originally there.