\read the excerpt from my story another time he went to see about extending the route of the day street bus. black people in a little community on the other side of the day street bridge had to walk across the bridge, about half a mile, to get to the bus. mr. nixon went down to the bus company to protest. he was always going down to the bus company to protest; sometimes he went by himself, sometimes he took someone with him. he himself did not ride the buses—he had his own car; but he was acting on behalf of the community. the bus company told him that as long as the people were willing to walk the half mile and then pay to ride the rest of the way downtown, they had no need to extend the bus line. which correctly describes a cause-and-effect relationship in this excerpt? cause: people had to walk a half mile to catch the bus. effect: the bus company refused to extend the bus line. cause: people had to walk across a bridge to catch the bus. effect: mr. nixon protested to the bus company. cause: the bus company refused to extend the bus line. effect: mr. nixon drove his car into town. cause: mr. nixon asked the bus company to make a new stop. effect: the bus company refused to make a new stop.