Having a greater pool of knowledge, gaining different perspectives, gaining intellectual stimulation, having a better understanding of decision rationale, and having a deeper commitment to the decision are advantages

The correct answer is letter "A": group decision making.

Explanation:

Group decision making allows members to share individual experiences among the team. The team usually starts by brainstorming ideas on their tasks so the path they will follow is decided by the majority of them. These types of actions create a sense of justice in the group that later will be translated into commitment with the path taken. Besides, as the team members elected that path by themselves, they are likely to have a deeper understanding of what they are looking for the result of the work to be.