In what is today the southwestern united states, which successful farming strategy did early native american groups use?

a. large permanent settlements
b. trade with mesoamericans
c. complex irrigation systems
d. giant earthwork mounds

I believe the answer is: c, Complex irrigation systems

The terrain where native american live on had a different height in elevations which make it really hard for them to obtain water for their agricultural field. And yet, the natives manage to develop Complex irrigation systems that allow them to allocate the water from the higher ground into the all the agricultural fields in different elevation.

the catholic church withhold people's access to the bible during the middle ages.

people could go to church and listen to the teachings, but it was absolutely forbidden to own and/or read the books of both the old and new testaments. it was also prohibited to translate the books (which where originally in biblical hebrew) to any other language.

this was done so the church could remain in control of what their teachings were and to enhance their importance and power, while also being able to judge people's actions through information that was unavailable for the general public.