Marty is developing a new way to heat an airplane's windshield to prevent it from accumulating ice when in flight. a thin layer of clear, conductive material is injected between two layers of thick windshield plastic. a very small electric current is run through the inner material to keep the plastic layers warm. how might using a model marty develop his design? a. marty could use a model to discover a new type of plastic for windshields. b. airplane manufacturers could be sold models to use in their new planes. c. a model could be used to test his design in a lab. d. a model could be used for automobile windshields.