Final answer:
Se venden chocolates en la tienda is the phrase that uses se in the passive voice.
Step-by-step explanation:
The phrase that uses se in the passive voice is A. Se venden chocolates en la tienda.
In this sentence, the verb venden (sell) is in the passive voice because it is referring to the chocolates being sold, rather than specifying who is selling them. The se before the verb indicates the passive voice.
An example of an active voice sentence would be: Vendo chocolates en la tienda (I sell chocolates at the store).
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