Despite you didn't give me the answer choices (a-d) I will take a wild guess and say its I, II and III.
the tone is the general character or attitude of a place, piece of writing, situation, etc.
Haha funny question but if im answering correctly it is because its not proper grammar in the english language. Who knows? Haha, have a good one :)
The correct Answer is D. <em>I, II, and III</em>
It is only generally accepted to use different verb tenses when writing it in mid-sentence is the events that you want to show or describe did not happen at the same time. This would clearly show the difference in the time on when the events occurred. The answer would be option B.