You use preterite to describe an action that took place and was fully done, Ex. José entro a la habitación, you can see John went into the room, he completed the action. On the other hand, imperfect tense doesn't specificate if the action was completed, Ex. José entraba a la habitación, it doesn't tell us if José fully entered the room.
Answer:
Buena Vista Social Club interpreta canciones clásicas del son cubano.
Explanation:
Buena Vista Social Club was a famous group of Cuba. They danced and played some music. Their style was to play classic songs like son cubano. The band was created in 1990.
So the missing word in the sentence is <em>"son cubano"</em>.
La inmigración fue muy importante en Cuba desde la hasta mediados del siglo XX.<em> Buena Vista Social Club interpreta canciones clásicas del </em><em>son cubano.</em>
Hey Friend!
The answer you're looking for is, A. el cante.
Hope this helps! :)