Answer:
Film's beginnings can be traced back to a bet involving horse hooves, multiple cameras, and projecting images through a magic lantern. The correct revision for this sentence for parallel structure is:
Film's beginnings can be traced back to a bet involving horse hooves, multiple cameras, and a magic lantern.
Step-by-step explanation:
The original sentence has faulty parallelism because "projecting images through a magic lantern" is not parallel to the previous two items. The correct revision of the sentence maintains parallelism in the sentence by including "a magic lantern" to keep the structure consistent.
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