a. People work together to get the things they need
Explanation:
Specialization, which is the practice whereby different individuals do things they are good at individually at a given point in time is a practice tht has been in existence from time immemorial. <em>For the community in question, specialization of labour in the early communities helps them to work together in-order to get things they needed done on time as well as protect themselves from harm.</em>
