Final answer:
The sentence that is an example of a simile is 'O Dad says that I'm as brave as a lion.'
Step-by-step explanation:
The sentence that is an example of a simile is: O Dad says that I'm as brave as a lion. A simile is a figure of speech that compares two different things using the words 'like' or 'as'. In this sentence, the comparison is made between being brave and being as brave as a lion, indicating great courage.
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