The two things being juxtaposed here are: D. Emily staring and the druggist looking away.
Juxtaposition is known as a way of placing two things side by side in order compare or contrast them. It can also be used to know the similarities and differences between two things.
We can see here that the two things juxtaposed here is Emily staring and the druggist looking away. This is also defining the character perspective.
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