I believe you should omit Sport because the sentence still makes sense that in Argentina Soccer is everyone's favourite.
This is correct. Make sure to put a space after the comma that comes after Daises though.
I believe the answer is number 1
Hello,
Here is your answer:
The definition of theme statement is that is good enough to cover your work or your essay. Its mostly the meaning of what your writing about.
If you need anymore help feel free to ask me!
Hope this helps!