What time did you arrive . . . . . . . . the station? A. by B. at C. on D. in

The correct answer is B. at.

The preposition “at” is used to indicate a specific time or place. In this case, the question is asking for the time at which the person arrived at the station. Therefore, the correct answer is “at.”

The other options are not correct because they do not indicate a specific time or place. The preposition “by” is used to indicate a means of transportation. The preposition “on” is used to indicate a day of the week or month. The preposition “in” is used to indicate a period of time.

Here are some examples of how the preposition “at” is used:

• I arrived at the station at 10:00 AM.
• The meeting is at 2:00 PM.
• I live at 123 Main Street.
• The party is at my house.

I hope this helps!