Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Apple on Thursday lifted the veil on its plans to remake the educational landscape in a way that centers on its best-selling tablet computer, the iPad. "Education is deep in Apple's DNA and iPad may be our most exciting education product yet," Philip Schiller, Apple's senior vice president of marketing, said in a statement. At a press conference in New York, the company announced three products that aim to get students and teachers to use the iPad's touch-screen interface to read, write, plan classes and communicate with each other. First, a free app called iBooks Author lets anyone create a digital, interactive textbook.Apple announces digital textbook publishing appThe free app is called iBook AuthorThe company says anyone can make a digital textbook in five minutesMoves are part of Apple's larger strategy to remake the textbook industry 
 Question:At the press conference, _ mocked paper textbooks, saying, "They're not portable, not durable, not interactive, not searchable."

Philip Schiller