Answer:
6. The plane zoomed down the tracks, sped off the end, and soared up into the air like a glorious mechanical bird.
Step-by-step explanation:
This sentence is personification, or maybe a simile. Obviously, the plane didn't actually soar into the air like a "glorious mechanical bird". This is added for a comedic/entertaining effect.
Simply, it could've been put, without the entertainment factor, as "The plane zoomed down the tracks, sped off the end, and soared up into the air." That is descriptive enough, however with the added simile, it creates a funny and comedic tone.
Also, I like your pfp.