Final answer:
The correct word to complete the sentence is 'al'.
Step-by-step explanation:
The correct word to complete the sentence is B. al.
The phrase 'ir al supermercado' translates to 'to go to the supermarket' in English.
For example, you would say 'Ella quiere ir al supermercado' to mean 'She wants to go to the supermarket'.
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