ALSO DUE SOON: A cell needs to transport materials across the cell membrane. Which of the following best describes the type of transport shown here? A. active transport, because energy is NOT required for the materials to cross the cell membrane B. active transport, because energy is required for the materials to cross the cell membrane c. passive transport, because energy is NOT required for the materials to cross the cell membrane D. passive transport, because energy is required for the materials to cross the membrane