Why does the narrator hear her mother's footsteps "above it all"?

Which statement best paraphrases these sentences from the text

How is reading a social experience? (5 points)

Why is it important to include a descriptive subject heading? it in sorting the topics. it the recipient see its importance. e-mail programs won’t allow e-mail to be sent without it. it keeps junk e-mail separate from important e-mail.