Answer:
The answer is the third option: It raises the tension in the story by making a comparison that conveys the severity of Malik’s injury.
Step-by-step explanation:
A simile is a figure of speech used for comparison. In the excerpt we are analyzing here, comparing an ankle to a pretzel ready to crumble means the injury is serious and will probably keep Malik from taking part in the relay. Letting the reader know about that raises the tension in story. The reader pictures a pretzel crumbling due to the simile and is, thus, able to picture how bad the injure is.