Why should goals be set for a group discussion? A. to limit who participates in the discussion
B. to ensure that there are no discussion rules
C. to form an opinion before the discussion
D. to establish a purpose for the discussion

Why are slanted roofs found on many buildings within russia and finland? a. to prevent ice slides. b. to prevent the build-up of water during heavy rains. c. to prevent heat from escaping during the clod winter months. d. to prevent snow build-up.