Sentence 1: Meredith needed to buy a present for her Grandma. 
 Sentence 3: When her grandmother received the present, she was confused 
 Sentence 4:  Meredith had to explain what an ebook was, and show her how it worked 
 Sentence 5:  Her grandma was glad Meredith thought of her, but never used the Kindl 
 Option 1: She knew her grandmother liked to read, and bought her a kindle. 
 Option 2: She knew her grandmother liked to read, and bought her a book.