Which of the following practices can make a group's decision-making process more effective?
a. permitting member roles to remain uncertain.
b. requiring agreement that the decision is the optimal one.
c. forming smaller groups and working groups.
d. promoting the use of groupthink.

The practice that can make a group's decision-making process more effective is: B. requiring an agreement that the decision is the optimal one
By outting this agreement , we cant potentially prevent any form of further conflict in case that some members of the group were not happy about the decision