Final answer:
The correct option to complete the sentence is 'El oso'.
Step-by-step explanation:
The correct option to complete the sentence is El oso. The sentence states 'es muy grande y duerme muchos meses en el invierno', which translates to 'it is very big and sleeps many months in the winter'. This characteristic of sleeping many months in the winter is typical of bears, so the correct option is 'El oso' which means 'The bear' in English.
Learn more about Spanish vocabulary