Answer:
The one that is not a function of juxtaposition is the second one: symbolism.
Step-by-step explanation:
Juxtaposition in literature is a technique in which two or more ideas, places, characters, and their actions are placed side by side in a story for the purpose of developing comparisons and contrasts. It presents situations as opposites. Suspense, mood contrast and character development are examples of this technique. On the other hand, symbolism is not; it is a figure of speech where an object, person or situation has a meaning different than its literal meaning and the reader can understand it because of the context. It's function is to create a vivid, poetic image of what he or she is reading.