Choice A has an incorrect comma after brown. It should be absent to sound correct. To hear the difference in your head think "brown paper bag" versus "brown....paper bag".
Choice B lacks a comma after sunscreen.
Choice C correctly places commas when saying "not Karmen". This seems to be the correct answer.
Choice D is incorrect, it fail to put a comma after "a star on the swim team".
Choice C is the correct choice.
Your answer should be D) Graphologist because Graphology is study of handwriting
Argument is in British English, and Argument is American English. Like in British English judgment, but in American English judgement. But in the dictionary it is spelled argument. So the answer to your question is:
True.
Hope I didn't answer it too late. :)
