There really isn't any information to differentiate... but from trying to understand your question, I'd say the first statement because it clarifies Malaria to be a type of parasite. Also, here is the difference between all three if you need to for future use:
Pathogens are disease-causing microorganisms. Pathogens are of different kinds such as viruses, bacteria, fungus, and parasites. Pathogens can be found anywhere including in the air, food and the surfaces that you come in contact with. While often confused as the same thing, bacteria and viruses are kinds of pathogens.
I hope this helps!