Final answer:
Harry exhibits a democratic leadership style by seeking group participation and consensus in decision-making, which can increase group cohesion but may slow down the process.
Step-by-step explanation:
After observing Harry's interactions and leadership within his peer group, it can be determined that Harry frequently utilizes a democratic leadership style. This style is characterized by encouraging group participation in decision-making processes, aiming to build consensus before acting, and often being liked by team members. However, this style can sometimes lead to slower decision-making due to the time it takes to reach a consensus and the risk of creating opposing factions within the group.