What group decision-making process uses a series of written responses to a series of questionnaires instead of meeting in person to make decisions?

Delphi Technique

Explanation:

Delphi Technique  is the method in which group communication takes place between experts for forecasting about any particular subject through discussion. This discussion is carried between expert panel through questionnaires in multiple level or rounds.

Series of questions are sent to them upon which judgement and decision is made through systematic debate.This process is for estimation without face to face meeting. .

what's the matches?

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there