Leadership theory would best address TVN’s management problem

Imagine you are a consultant and have been hired by TVN.  The president of TVN is concerned because employees are lacking motivation and the TV show ratings are down.  After speaking with various employees, you learn that the managers at TVN are not clearly outlining how to achieve performance goals, and are not making a clear link between employee performance and organizational rewards.  Your assessment of the situation leads you to conclude that the source of the problem lies with the TVN’s leadership.

Which one leadership theory would best address TVN’s management problem?  Name and describe the key leadership behaviours in this theory. Further, based on the Goal Setting Theory of motivation, which type of leader behavior in this leadership theory is most relevant to gaining employee goal commitment, and in one or two sentences describe why? Lastly, according to Goal Setting Theory of motivation, how challenging should employees’ goals be, and which type of leader behavior in the leadership theory discussed above is most relevant to determining the level of challenge in setting of goals?