The correct answer is "of the children". This adjectival phrase is used to modify and further explain the noun "voices".
The answer is "an appeal to moral responsibility."
<span>In Birches, the author uses the line "like girls on hands and knees that throw their hair before them over their heads to dry in the sun" to describe C. the shape of the trees after an ice storm.
The trees bend like these girls who dry their hair in the sun.
</span>