It is interrogative because a question is being asked. It is usually interrogative if there is a question mark at the end.
Answer: The effects from 9/11 are mainly the lives lost and the spot where the twin towers used to be is now a small memorial spot with the names with everyone that died. There is also the fact that people have to go through that day every year.
Explanation:
The three basic parts of an essay would be Introduction, Body, and Conclusion. If that it is not an answer choice it is thesis, plot, and conclusion.
