Answer:
The effect of using the phrases "the army, the navy, the air force of letters" and "jamming up" to describe Aunt Emily's correspondence is that it creates an overwhelmed mood, describing the correspondence as large in scale and suggesting that it is invading Nomi's life. The military terminology used to describe the letters emphasizes their overwhelming nature and suggests that they are taking up a lot of space in Nomi's life, just like an army or navy would take up physical space. The phrase "jamming up" further emphasizes the overwhelming nature of the correspondence, suggesting that it is causing a blockage or obstruction in Nomi's life. Overall, the language used creates a sense of being overwhelmed and invaded by this large amount of correspondence.
Step-by-step explanation: