Answer :
In the given sentences from The Day of the Butterfly, the author includes a description of Myra and her brother to emphasize their isolation from others. Hence, the correct answer is option C.
The author's main purpose for including this description of Myra and her brother is to emphasize the children's isolation from the others (option C).
The description highlights their physical appearance, such as their long smooth oval faces, dark eyes with weary look, and their melancholic and discreet demeanor, which sets them apart from their peers. The author compares them to children in a medieval painting or small figures carved of wood, further emphasizing their distinctness from the rest.
By focusing on the characteristics that make Myra and her brother different, the author intends to convey the theme of isolation and the sense of being an outsiders in their social context.
Therefore, the correct answer is option C.
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