Answer:
The correct answer to the question: Relatively spontaneous social behavior which occurs when people try to develop common solutions to unclear situations is: Collectivity.
Step-by-step explanation:
Collectivity, is a form of collective behavior, but that it is characterized by how sudden and spontaneous it happens, as a means to solve problems that need rapid and immediate solutions. These collectivities, or groups of people who share a common ground, and are brought together by a problem that needs immediate attention, and that affects all the indivduals in the group, can be as simple as gatherings in a town, or small groups inside political parties themselves, or they can be bigger. The main point is that this gathering of people is sudden, and responds to spontaneity, and the desire for common solutions.