The answer is: B. We all seem to be in basic agreement, so there's no sense in continuing our discussion of this issue."
In a group think, there are some portion of the group members who decided not to challenge the view or principles that held by the group for the sake of not disturbing the harmony in the group.
The statement above is most likely made in order to shut down any chance for members who have opposing views to speak up their opinion so they decided to disregard it rather than acknowledging the difference.
