The answer that correctly uses the colon is the last sentence. Normally a colon is meant to be used when it is showing a list of options, but the first and second sentence only have one sentence after that. A colon also can show reasons why a person does something, but for the third option, there's only one reason. In the last statement, the colon is used to break up the statement. It also shows that Harry has something in account for what he wants in his life. So, your answer option should be "D"
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Singed, Liz
What page does it show this?
the authors purpose is to inform readers, so therefore it needs to be understandable and clear how to do what the reader went to the source to learn how to do, so, A would be the answer.
hope this helps!
