Answer:
Onomatopoeia.
Explanation:
In the given line, the figurative language which is used is onomatopoeia.
Onomatopoeia is a literary device which is used to create phonetical sounds of any object using words. It mimics the sound by describing them in words. For instance, 'tick-tock' is an onomatopoeia for clock.
In the given line, 'jug-jug-SPAT' is an onomatopoeia used for describing the police motorcycle which followed Gatsby, in the novel 'The Great Gatsby.'
Therefore, onomatopoeia is the correct answer.
