A “source of infection “ is the individual or object from which an infection is actually acquired.
Please correct me if I’m wrong.
Answer:
-Single words are shortened to abbreviations.
-Specialized language in a profession are called jargon.
-Words derived form someone's proper name are called eponyms
-A type of word composed of the first letters of other words is an anagram
Protein because of the lack of meat
I think it's C . Hope this helps