Answer:
Susana será la guía porque sabe mucho de arte.
Explanation:
The paragraph is talking about an art and a cultural exhibit. The last sentence states that there will be a tour guide. So the logical answer would be that Susan will be the your guide since she knows a lot about art.
I’m a bit confused on your question, I’m not sure which of the followings you are referring to
¿El día de la independencia de los Estados Unidos es el cuatro de julio?