Answer:
Don't quote me on this but I think it is A
Step-by-step explanation:
The reason why I think it is A is Hunter gatherer's came before anything else so that takes off C,D, and E, so it would be A or B. But B say'd the development of town's. But people needed to have agricultural inventions and then food producers because if they had a town first they would have to get the food later on. But I am not really sure but I think your best bet is A.