Which phrase best defines "quotation"?

a source excerpt in your own words

a brief statement of the main ideas of a text

a sentence written on an index card

a word-for-word excerpt from a text

The phrase that best defines the word "quotation" is a word-for-word excerpt from a text. It is always important to use quotations when copying someone's sayings or a text from a book, etc. If you don't quote then you could actually be plagiarizing work. The correct answer is D.