In paragraph 6, what the writers meant by “were the outward expression of our very thoughts” is: C. The beautiful crafts the Native Americans have made from their imagination.
Imagination refers to the thoughts that go through a person's mind.
In this excerpt, the Native Americans were saying that even though they did not have all the machinery that the whites had, they were still able to make beautiful crafts that reflected their beautiful thoughts.
Option C is a correct interpretation of the phrase.
Learn more about Native Americans here:
https://brainly.com/question/24724492