D. since
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The answer is: A - punctuation and quotation marks are used.
Answer: Taking care of her brother Raymond changes Squeaky because she doesn't want anyone to hurt his feelings. Squeaky likes to be a winner and who can blame her. She wants to beat everyone in the big race because she works hard to be the most fastest runner around.
Explanation: It's a bit funny, but Squeaky stays focused on her run. Then Squeaky looks the other direction and sees Raymond. When she sees him, Squeaky is shocked by what she sees.