The phrase "would have met" is correct in this context because it refers to a hypothetical situation that did not happen in the past. The sentence implies that if the person had been informed earlier, a meeting would have occurred.

To break it down:

• "would have met" is used to express an unreal past condition. It indicates that there was a possibility of meeting if the condition (being informed earlier) had been met.

The other options do not fit because:          

• "would" is incomplete without a main verb.            
• "will have met" suggests a future action, which is not suitable here.           
• "would meet" is used for future hypothetical situations but does not suit the past context.

Thus, "would have met" correctly captures the intended meaning of reflecting on a past possibility.