What is the preface or introduction to a book?

a page at the front of a book that lists units and chapters with their page numbers
an alphabetical list of all the specialized words and terms used in the book and their definitions
a statement of the author’s purpose in writing the book, which may include suggestions for using the book
an alphabetical list of all topics covered in the book and the pages on which they can be found

Read the following lines from wordsworth's poem and answer the question. for oft, when on my couch i lie in vacant or in pensive mood, they flash upon that inward eye which is the best paraphrase of these lines? despite being able to plant my own daffodils, i prefer remembering the ones by the bay. if i feel very sad, i look inside myself for courage to face the day with my eyes open. oftentimes, i become so tired and overwhelmed that i lay down and think of daffodils. when i am feeling empty or concerned, the sight of the daffodils comes to my mind.

Read this passage from "the american dream." it does not say all white men, but it says all men. . how does the second part of the sentence relate to the first part?

Read this passage from "the city without us" by alan weisman: which statement best explains how the structure of the passage supports the author's purpose? a. the passage traces several events in the order that they will occur to highlight how nature conquers human civilization. b. the passage shows that natural forces such as an absence of predators and an increase in the squirrel population can lead to destructive results. c. the passage shows that natural forms such as an absence of predators and human hunters can lead to the reforestation of new york city. d. the passage identifies how two natural forces are co-dependent - the deforestation of new york and the extinction of squirrels.