Answer :
The correct answer here is A - Geographic factors impacted the
development of different culture groups in North America due to the
conduct of trade. Due to the difficulties in trading between different
areas, different pockets of culture developed that did not trade with
other groups because they were simply not able to.
I know this is 2 years late, but I'm going to answer this for those who are currently looking for the answer to this question.
The correct answer is B: food production.