To me personally this is good but i can help you make it better by using better transitions and stuff just message me or feel free to email me swaggykam00icloud.com or swaggykam00gmail.com
Hope i was able to help,~Kashout kam
I'm not too sure about this. However, I would say that it is Ok to say attached is the assignment. It seems wrong, but to make it seem more natural, maybe try adding extra words like requested.
I believe the answer is D because no where in his conclusion is he promising anything