Answer:
Which sentence is out of order in the paragraph?
A: D. (6)
Step-by-step explanation:
The text is talking about the person who collects the objects, it is up to him to know the story (or at least investigate about his collection and thus learn about it) but in the next sentence (6) he goes on to talk about "x" collectible objects (seashells) are not a good idea for the collection of a person who does not live near the ocean. That sentence goes out of context.