Final answer:
The correct sentence that conveys the passive se form of 'comprar zapatos' is 'Se compran zapatos.'
Step-by-step explanation:
The correct sentence that conveys the passive se form of 'comprar zapatos' is Se compran zapatos. The verb 'comprar' (to buy) is conjugated in the third-person plural (compran) to agree with the noun 'zapatos' (shoes).
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