Hersey and Blanchard's situational leadership theory argues that

A) leaders can be both task oriented and relationship oriented.
B) leaders must maintain their leadership style once it is chosen for a certain group.
C) the group should be manipulated to ensure leadership effectiveness.
D) the trait approach should be applied to improve leadership.

Hersey and Blanchard's situational leadership theory argues that leaders can be both task oriented and relationship oriented, meaning that the leader's style should adjust based on the situation and the needs of the group they are leading. This theory does not advocate for manipulation of the group, and it goes beyond the trait approach to focus on the leader's behavior and their adaptability to different situations.