1. Turn the book
upside down on a flat surface in order to keep your place.
Sorry, this answer is not
correct. Turning an opened book upside down can
weaken the spine. If the book is older and more fragile, it
can cause the text
block to separate from the cover requiring a more costly repair.
2. Memorize the page number and close the book.
Correct! If you
have a good memory, this is the ideal solution.
3. Put a pencil between the pages where you stopped reading
and leave the book in close proximity to where your pet is
lying.
Sorry, this answer is not
correct. Any object placed inside a book can damage the
spine. Pets are known to chew up books, and small children
can innocently make pen, pencil or crayon marks inside a book.
4. Mark the place by inserting a bookmark where you stopped
reading and put the book in a secure location.
Correct!
Inserting a bookmark (like this one) to keep your place is
the least injurious practice.
5. "Dog ear" one of the corners and put the book down.
Sorry, this answer is not
correct. The crease left from turning a corner down will not
disappear. If the paper becomes brittle the corner will break
off.
6. Mark your place with a Post-it note.
Sorry, this answer is not
correct. The adhesive on Post-it notes has a harmful effect
on paper. It hardens and leaves a film that becomes acidic.
This results in eventual discoloration and brittleness of the
paper. Post-it notes left for even a short time on already
brittle paper (old books) cause the paper to tear when removing the
Post-it.