Final answer:
The sentence 'Quiero comer mi manzana en el patio' is grammatically correct.
Step-by-step explanation:
The sentence 'Quiero comer mi manzana en el patio' is grammatically correct in Spanish. The subject of this sentence is 'yo' which means 'I' in English, and it is implied in the verb form 'quiero' meaning 'I want'. The verb 'comer' means 'to eat', 'mi manzana' means 'my apple', and 'en el patio' means 'in the patio'.
Learn more about Spanish sentence structure