Because Carlos is a masculine name, I would use the word <em>el </em> to talk about him.
Desfiles coloridos is colorfull parades.
It has to be that one because all the others have nothing to do with a carnival.
<span>la fiesta rosada is the pink party
</span><span>procesiones religiosas is r</span><span>eligious processions
</span><span>visitas al cementerio is visits to the cemetery.</span>
Answer: Susana el profesor ayer (hablo).
Explanation: