Answer:
The correct answer is A. The Mound Builders were hunter-gatherers who built mounds.
Step-by-step explanation:
Mound Builders is a collective name for some of the ancient Indian peoples of North America, that artificially created mounds, which were used by various early Indian cultures for funeral, residential and ritual purposes.
The mounds were built by different peoples. They had different cultures and were not linked by common traditions and traditions. Therefore, any summary is inaccurate.
The oldest mounds found are those of the archaic site of Watson Brake, in northeastern Louisiana, which are dated to 3500 BC.