Answer: The speaker was so surprised the paella tasted so delicious in spanish is =
Explanation: El orador estaba tan sorprendido de la paella degustada tan deliciosa.
The word that fits would be B. Generosa.
Late but hope it helps.
The correct answer would be abrió.
Usted <u>abrió</u> la ventana.
You (formal) opened the window.
Hope this helps! :3