Final answer:
The correct way to say 'my brother' in Spanish is 'mi hermano'.
Step-by-step explanation:
The correct way to say 'my brother' in Spanish is mi hermano. The option 'mi hermana' means 'my sister', 'tu hermana' means 'your sister', and 'tu hermano' means 'your brother'. So, out of the given options, the correct answer is mi hermano.
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