They are all about the same topic. And they use something else as an example of transformation... thus making it an analogy, or a metaphor.
5
1- I visited china and went to china wall and about that I remember the nature of there and foods, and the people how which communicated with them , my friends.
2-Ancient China was one of the longest-lasting civilizations in the world, and it traces back over 4,000 years. It is well-known for creating the Great Wall, which kept outside invaders like the Mongols at bay.
6-the work they did
I believe The answer would be D
