The correct answer is A. True
Step-by-step explanation:
The Plains Indians include multiple Indian tribes or nations such as the Kiowa, the Cheyenne, the Sarsi or the Arapaho that developed in a region of North America known as the Interior Plains. These tribes share some cultural aspects but also had unique cultural traits.
In the case of clothing, tribes used different materials and decorated clothing with different designs. This is because the materials available depended on the zone the tribe was, for example, in some zones bison-skin was the preferred material. Additionally, the decorations were in most cases unique to each tribe because they were related to cultural elements or stories of each group such as myths, battles, ancestors, etc; also, the pigments or materials used for decorations were different. Thus, it is true each Plains Indian tribe decorated clothing with different designs.