How are true friends identified?

True friends are identified by their actions

Explanation:whether they are big or small, actions that indicate loyalty, honesty, trustworthiness, or a willingness to separate true friends from casual friends

answer; /// i believe that the correct answer is (d); /// alternate walking and running;

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