Ensure that your argument is well prepared (facts, know your audience and what their preference is, etc). Good ways to present are to use emotion or strong facts. Don't exaggerate facts, thiscan lead to downgrades in your presentation grade. Make sure that everyone can understand, so simplify your topic if need be.
C. Is the correct answer to your question
The overall tone of the passage "Caius Julius Caesar, the first Roman that came into Britain" is that, Julius Caesar was proud and felt like he could conquer Britain and take it for his own. Hope this answers your question. Have a great day ahead!
Something dealing with money.
this is my best guess