Based on this excerpt, what is the purpose of the preface?
Read this excerpt from the preface of a book on the Titanic.
On April 10, 1912, the [Titanic) left Southampton on her
maiden voyage to New York. Her cargo included a
priceless copy of the Rubaiyát of Omar Khayyam and a list
of passengers collectively worth two hundred and fifty
million dollars. On her way over she ... struck an iceberg
and went down on a cold April night. ... This is the story of
her last night
to summarize the events that his book will cover
to emphasize the wealth and luxury that was lost
to explain the personal reasons for writing the book
to define the historical period in which the events
occurred
-A Night to Remember,
Walter Lord

Read the excerpt from chapter 18 in frankenstein. alas! to me the idea of an immediate union with my elizabeth was one of horror and dismay. i was bound by a solemn promise which i had not yet fulfilled and dared not break, or if i did, what manifold miseries might not impend over me and my devoted family! could i enter into a festival with this deadly weight yet hanging round my neck and bowing me to the ground? i must perform my engagement and let the monster depart with his mate before i allowed myself to enjoy the delight of a union from which i expected peace. examine this excerpt to analyze the way the author’s choice of words adds to the meaning and impacts the tone of this portion of frankenstein. what does victor mean when he talks about “this deadly weight yet hanging round my neck and bowing me to the ground”? how do these words affect the tone at this point in the story? use examples and evidence from the text to support your analysis. frankenstein chapter 18