Final answer:
The sentence 'Este son nuestros carros' is grammatically incorrect. The correct sentence is 'Estos son nuestros carros'.
Step-by-step explanation:
The sentence 'Este son nuestros carros' is grammatically INCORRECT. The correct sentence would be 'Estos son nuestros carros', where 'estos' is the correct masculine plural form of 'this' and 'son' is the correct verb form for 'are'. In Spanish, adjectives must agree in gender and number with the nouns they modify, so 'estos' must be used instead of 'este' to match the plural noun 'carros'.
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