Listed below are several possible actions by firms. Indicate whether the action reflects invention, innovation, or diffusion. a$.$ An auto manufacturer adds "heated seats" as a standard feature in its luxury cars to keep pace with a rival firm w ose luxury cars already have this feature. $($Click to select$)$ b$.$ A television production company pioneers the first music video channel. $($Click to select$)$ c$.$ A firm develops and patents a working model of a self$-$erasing whiteboard for classrooms. $($Click to select$)($Click to select$)2$ d$.$ A light bulb firm is the first to produce and market modified lighting fixtures with LEDs $($light$-$ emitting diodes$).($Click to select$)$ e$.$ A rival toy maker introduces a new Jezebel doll to compete with Mattel's Barbie doll. $($Click to select$)$ e $<$ Prev $10$ of $24$ Next $>$