How did the caddo change their environment to fit their needs?
a) they built permanent homes and farmed
b) they moved from place to place
c) they traded with the french
d) they made flour from cacti

The Caddo changed their environment to fit their needs by building permanent homes and by doing farming.

Explanation:

The Caddo were a dominant Native American tribe that resided in the regions covered by present-day Texas and Louisiana. They were one of the very first Native American tribes to settle down in one place by building permanent houses and carrying out agricultural activities in the neighboring regions. The Caddo are known for clearing lands for the purpose of farming.

answer; biological;