Final answer:
The phrase 'me quedaba' correctly completes the sentence and means 'I stayed' in English.
Step-by-step explanation:
The phrase that correctly completes the sentence is me quedaba. The sentence will then read: yo me quedaba en la casa de mi abuela porque ella hacía una comida deliciosa. In English, this translates to: I stayed at my grandmother's house because she made delicious food.
Learn more about Completing a sentence in Spanish