I want to say it's B, that's the only one I can think that's relevant to the research
D - It intensities the conflict.
Any time there is a complication in a story, the pupose is to intensify the conflict. Exposition delivers necessary information (example: the setting), and a conflict does not resolve (end) a story nor introduce a theme.
Answer:
Stalactites
Explanation:
A tapering structure hanging like an icicle from the roof of a cave, formed of calcium salts deposited by dripping water.