Final answer:
The Spanish word that completes the sentence is 'pavo' and it refers to the tradition of eating turkey on Thanksgiving.
Step-by-step explanation:
The Spanish word that best completes the sentence is pavo.
El Día de Acción de Gracias is the equivalent of Thanksgiving Day in Spanish, while the other options refer to different celebrations. On Thanksgiving, it is a tradition for Americans to eat turkey, which is known as pavo in Spanish.
Learn more about Spanish vocabulary for Thanksgiving