Read the following paragraph, which is missing a topic sentence:
When I open a new book, the sharp smell of fresh paper and ink sends a shiver of
anticipation up my spine. When I need comfort, the creased pages of a favorite paperback
feel like holding the hand of an old friend. A book can tell many stories, but an e-reader only
one.
Which is the most effective topic sentence for the paragraph?
O There are books in every room of my house.
Reading is a wonderful way to pass the time.
O Physical books offer pleasures that e-books cannot supply.
Most books published today are available in both physical and electronic versions.

Topic sentences are key in paragraphs because these state briefly the focus of the paragraph and help the reader anticipate the topic of the paragraph. In the case of the paragraph presented, this refers to the benefits and pleasures of physical books as it is explained in " the creased pages of a favorite paperback feel like holding the hand of an old friend" in contrast to e-books as explained in "but an e-reader only one". According to this, an appropriate topic sentence should mention books and e-books and their contrast; this occurs in "Physical books offer pleasures that e-books cannot supply."