Q:Fact 1: Insulated material can be used for keeping warm. Fact 2: Building insulation is a cellulose material made of ground computer paper and cardboard boxes. Given the two facts above, answer the question "What can keep a home warm?" with the following options: - cellulose material - an electric stove - Movement of an air mass - plastic wrap - water - bubble tape - electricity - Animal fur
A:
cellulose material