Final answer:
Leaders in the "High Credibility, High Relationship" quadrant exhibit a collaborative and consultative decision-making style.
Step-by-step explanation:
Leaders in the "High Credibility, High Relationship" quadrant of the Credibility Matrix exhibit a collaborative and consultative decision-making style. This means that they involve their followers in the decision-making process, seeking their input and opinions. They value teamwork and make an effort to build strong relationships with their followers, creating an environment of trust and collaboration.