Answer:
They do not have to combine with an introduction to make a complete sentence.
Step-by-step explanation:
This is the sentence that does not express a true statement about quotations. In order for quotations to be successfully integrated in a passage, these need to be combined with some sort of introduction. This is necessary in order for the quotation to make a complete sentence. By doing so, the text will become more clear, and the reader will be able to read it more easily.