The blank needs to be filled with "tomar" :)
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.
A) No es delicioso
Por que dice que no es muy sabroso (ósea que esta rico pero no lo suficiente)
It should be A) Yo soy Chilena, but if not try D)