Final answer:
A leader concerned with both task and people is a democratic leader, who encourages group participation and consensus building.
Step-by-step explanation:
A leader who has strong concerns for both task and people is referred to as a democratic leader. Democratic leaders focus on encouraging group participation in all decision-making processes and strive to build consensus before taking action. This is in contrast to laissez-faire leaders who are very hands-off, and autocratic leaders who are highly task-oriented and may issue orders without input from group members. Unlike the laissez-faire or autocratic leadership styles, democratic leadership balances the completion of tasks with attention to group dynamics and shared decision-making.