In “hanging fire,” the speaker switches topics frequently from line to line in order to a. build her feeling of anger. b. emphasize all the thoughts of someone at her young age. c. describe her as too busy. d. give the reader her feeling of depression.

b. emphasize all the thoughts of someone at her young age.

In "Hanging Fire" we encounter a girl of fourteen. The poem tries to illustrate how the mind of a girl that age works. Therefore, it switches topics frequently from line to line. This is to emphasize all the worries that people have at that age, and the difficulty in handling all those thoughts at once.

i think the answer is invented words, rhyming knack, alliteration, and, metaphor.