What is number 2? pls make sure your right

Why did chinese workers first come to america

Sam and ben have discovered some strange animals living in the woods behind their house. ben is excited because he believes they are marsupials, an animal he's never observed in the wild before. his brother is sure it is not. what feature should the boys consider in deciding whether the animals are marsupials?

The chart shows four articles read by the students in a science class