Answer:
D. Zoonosis.
It is any disease of animals that can incidentally be communicated to people. Some diseases that are transmitted this way are ebola and salmonellosis., they can be causes by viruses, bacterias, and parasites.
A. adjectives suffixes meaning pertaining to.
Theses suffixes mean that are related to something, for example: medical, physical, eclectic, cephalic, diatomic, generic, hysterical, neurotic, primary, secondary, practical, accidental, rhythmical, and so on.
All these words indicate a relation with other root words, for example, hysterical, tells about someone who is in a stage of hysteria, that is, it's related to hysteria.
