Final answer:
The main responsibility for effective leadership and ensuring the chapter's success falls on the President, as per the U.S. Constitution, which requires a balance between individual action and collaboration with other government branches.
Step-by-step explanation:
The responsibility to make his or her leadership strong and effective and to ensure the chapter's success primarily belongs to the President.
Article II of the U.S. Constitution outlines various powers and responsibilities allotted to the President, including serving as the Commander in Chief, making treaties with a two-thirds Senate approval, and submitting nominations to the Senate.
The effectiveness of a president often depends on a balance of direct action and working cooperatively with other branches of government. This cooperative dynamic is emphasized to limit unilateral actions and encourage collaborative governance.