B-Motivation. All others are outer influences that affect behavior.
1. The Eiffel Tower is so beautiful at night. We will have visited by the day we arrive there.
A thing or event that existed before or logically precedes another or preceding in time or order previous or preexisting hope I helped
The answer in my opinion is A. It would really show how big the Great Wall of China is and prove it is one of the largest building projects.
Hope this helped ☺️