Final answer:
The sentence 'Soy quince años' is grammatically incorrect. In Spanish, the subject pronoun 'yo' is used instead of 'soy' to indicate 'I am'. The correct sentence would be 'Yo tengo quince años', which means 'I am fifteen years old'.
Step-by-step explanation:
The sentence 'Soy quince años' is grammatically incorrect.
In Spanish, the subject pronoun 'yo' is used instead of 'soy' to indicate 'I am'.
The correct sentence would be 'Yo tengo quince años', which means 'I am fifteen years old'.
Learn more about Grammar in Spanish