Answer: Harry Potter lies outside his aunt and uncle's house, unaware that his life has changed forever (Rowling 21).
Step-by-step explanation:
The last option summarizes the series as a whole. The first option, "Harry Potter lies outside his aunt and uncle's house, unaware that his life has changed forever (Rowling 21)" summarizes the excerpt we are studying here. Harry is just a baby and he does not know of his own importance and how difficult his life is about to become.
Summaries should take the main idea, the essence of the content, and condense it in a clear and short manner. They are not supposed to offer even more information than was initially given.