Which statements about south and central american weavings are true? choose all answers that are correct. a. weavers use a back-strap loom and hand-spun yarn dyed with natural dyes. b. weavings have bright colors and patterns, with extra embroidered designs sewn with a needle and thread. c. patterns are for visual effect and don't have symbolic meaning. d. weavings can be used as identification because each region used different colors and patterns.