Final answer:
A democratic leadership style is characterized by decisions being made by the group through consensus, though this can lead to slower decision-making.
Step-by-step explanation:
A leadership style where decisions are made truly by the group is a democratic leadership style. In this approach, democratic leaders encourage group participation in all decision-making processes. They prioritise building consensus within the group, which necessitates considerable time and effort. Democratic leaders are commonly seen in various settings such as clubs, workplaces, or classrooms, where they facilitate a collaborative environment. While this leadership style is inclusive and fosters engagement, it may result in slower decision-making processes due to the time required to build agreement among all group members.