Answer:
un resfriado.
Step-by-step explanation:
As the sentence says "She coughs a lot and also sneezes a lot", you would say that she has the flu, so the flu in spanish is resfriado, the correct option to express what the sentence is trying to say you just have to say un resfriado, so the full sentence in spanish would be:
Ella estornuda mucho y toce mucho, ella tiene un resfriado-