Answer: cooperation; aggression; most people cooperate
Step-by-step explanation:
Two of Daniel's group members do not seem interested in contributing. Daniel begins to get frustrated that his goal of completing the task is blocked. Daniel remembers that cooperation is better than aggression, especially when most people cooperate.
It is better to try to cooperate with others than to be aggressive. Aggression can have the effect of pushing people away or putting them under pressure which can invariably lead to lower quality work.
In this case it is better that Daniel tries to cooperate with the other 2 members who are interested in contributing as they still constitute a majority. When the other 2 see this, they may become encouraged to join in the discussion.
If Daniel responds with aggression, it might even push away the other 2 members that seem interested in contributing because they may not feel comfortable working with him.