Considering the many attributes of an effective group, under which one of the following would you find a need to fully explain or define key words or language that may be part of the agreement?

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan