C because of the apostrophe after the s which indicated that they both participated
This is a lil wow but sorry I can’t help try the internet
I believe the best answer here is A. it uses imperfect coordinating structure.
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