Final answer:
The boy wears a uniform to school.
Step-by-step explanation:
El muchacho lleva uniforme a la escuela. This sentence means 'The boy wears a uniform to school' in English. The correct option to fill in the blank is d) lleva. 'Llevar' means 'to wear' in Spanish, and in this sentence, it is used in the third-person singular form 'lleva' to match with the subject 'el muchacho' (the boy).
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