I would say that the best answer would be the last one.
Yes, one should make sure that the subjects and verbs agree
I am not completely sure, but I would say that being the last of a long line of speakers refers to temporal context. Since you are last, it means that a long time will pass since it is your turn.
It means no to cross the line. I hope this helps you :]
Answer:
South Africa
Explanation:
Gandhi began his activism in South Africa in the early 1900s. He promoted civil disobedience.
