Group-task roles help a group to: Select one:
O a. find information and differing viewpoints.
O b. clarify and synthesise various ideas to tie together members' work.
O c. develop and accomplish its goals.
O d. mediate disagreements between group members.

In the 10th grade, i was teamed up in a group of four. our project was on modern history. altho it seemed super hard for many of us. patrick fleming  took charge and showed us the understanding of this project.  his leadership showed great ethics and it taught me, personally, how to others understand, not just to show them, but explain it thoroughly. and altho he was a great teacher i would have changed a few things. one being his attitude. many times he would get frustrated and impatient with the group.  i think  a leader i would have done exactly  what he did but with much more patience and be there more to explain. such as lunch  learning. and giving everybody a chance to try to explain it in their  head. 

Answer(d); /// in the absence of transaction costs,private parties can solve the problem of externalities on their own;