WHy bi-itch-es act sou tough but when i pullup th3 h-es hide like come outside n les get it poppin bi-tch

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.