Hey there!
It would be:
El dia de la independencia.
Hopefully this helps!
(Translates to the say of the independence, or independence day).
7. Esta is used for talking about the location of one thing and estan is used for more than one. They are both used when talking about whereabouts but about a different amount of things. Answer is A
8. Likely D using process of elimination. Only one that really makes sense.
9. May be incorrect, but I would say C makes the most sense in this context.