Final answer:
The poem "Background, Casually" opens in the third person and changes to the first person perspective, moving from an objective, potentially limited or omniscient viewpoint to a personal narrative voice.
Step-by-step explanation:
The poem "Background, Casually" by Nissim Ezekiel starts in a particular perspective and shifts to another throughout its verses. To answer the question directly, it begins in the third person perspective, where the narrator uses 'he/she/they' to tell the story, creating a detached and more impartial narrative voice. This is indicative of an objective point of view, where the narrator may be limited to one character's perspective or might have an omniscient view of all characters and events. The poem then changes to the first person perspective, using 'I' which indicates that the narrator is speaking through one of the characters about their own experience.
It's worth noting that authors sometimes unintentionally slip into the second person narration, using 'you' when the intent is to maintain a third-person narrative. This can be spotted when the narrative voice starts to directly address the reader. However, in the case of "Background, Casually," the transition is made intentionally, marking a shift in the narrative voice and the perspective from which the story is told.