In the Context of Communication in Teams,which of the Following

In the context of communication in teams,which of the following should a team leader ideally employ to increase team productivity?

A) The supervisor should single out staff, even if it affects team spirit, to get everyone focused on the issue at hand.
B) The team leader should ensure that the members confide in him or her alone to prevent the formation of informal groups.
C) The team leader should ensure that there is an open and positive communication among team members.
D) The team leader should look out for disagreements and squelch them at the roots.