D) Missing words in a quotation
Ellipses are three periods (...). They are used to show that something has been removed from a quotation. Using ellipses allows the writer to modify a quotation and only include the most important information for their support. The writer must not change the original meaning of the quotation when removing information. Many times information that is removed is an adjective clause or appositive phrase that clarifies information in the original text, but may not be needed if the quote is used in a research paper where key vocabulary has already been explained.
