Final answer:
The line in question is an example of a metaphor, which is a direct comparison between two, unlike things without using 'like' or 'as', suggesting a feeling of being held down. The correct option is 3.
Step-by-step explanation:
The line, "Until then I am are balloon, a red balloon tied to an anchor" is an example of metaphor. A metaphor is a figurative language technique that makes a direct comparison between two unlike things without using "like" or "as".
In the given line, the speaker is compared to a balloon tied to an anchor, suggesting a feeling of being held down or restrained in some manner without using comparative words, which is a characteristic of a metaphor.
This is different from a simile, which would use "like" or "as" in its comparison, hyperbole, which is an exaggeration, and personification, which would attribute human-like characteristics to non-human objects or concepts.