Wouldn't it be Problem and Trouble?
The rest wouldn't make sense...
Brutality is a word we give negative context too but in this essay, I'm going to explore the true impact of people who are afflicted by the act of Brutality.
Answer:
The correct sentence is the C. Against who you think you would compete in the contest?
Explanation:
The problem that is repeated in all the options is the use of <em>"whom"</em> and <em>"who"</em>. They are relative pronouns, <em>"Who"</em> is used as a subject while "<em>whom"</em> is part of the direct or indirect object of a verb or preposition.
To know which one use you can ask yourself if the answer of the question would be he/she or him/her, in the first case you must use <em>"who"</em> while on the other goes <em>"whom".</em>
I hope this answer helps you.