you will then summarize the views and then re-circulate to the experts again. you may get consensus after several rounds. what technique/tool you are using

The correct answer to this open question is the following.

Although there are no options attached or further reference, we can say the following.

The technique/tool you are using could be the Delphi technique.

The Delphi technique is a favorite method used in corporations by managers and leaders when they have to make business or operational decisions. The basics of this Delphi technique is that some questionaries are sent to group experts so they can analyze the information and come up with their conclusions. Then, these conclusions are shared with the decision-makers so they can proceed to make the best decision.

the number of senators, and representatives, the state has in congress.

i think it is the third one.