A、The train is crowded. B、The train is late. C、The train is empty. D、The train is on time. B“behind schedule”为晚点的意思，所以选择B选项。

M: I’m sorry, Madam. The train is somewhat behind schedule. Take a seat, and I’ll let you know when it arrives.
W: Thank you. I’ll just sit here and read a magazine.
Q: What can we conclude about the train from the conversation?

“behind schedule”为晚点的意思，所以选择B选项。