We will discuss the matter ___ a later date.

• A. In
• B. By
• C. At
• D. On

Answer: (C)

When talking about a future moment, English often uses a preposition that marks a point in time. The phrase “a later date” functions as that future moment, so the natural choice is “at.” It means at some unspecified point in the future when the matter will be discussed.

Other prepositions would change the sense: “in” would imply a general period rather than a specific moment, which sounds off with “a later date”; “on” is used for a specific day or date, which we don’t have here; and “by” would suggest a deadline before that time, not the time at which the discussion will happen. So the expression sounds natural and correct as “at a later date.”