Officials of the Chicago Transit Authority said they were investigating. The child, Nicole Hobson, was being taken by her mother to Children's Memorial Hospital about 11 P. M., Wednesday to check her recently inserted pacemaker. The child was stricken about a mile from the hospital. Her mother, May Hobson, 40, said, "I told the bus driver that my baby had just had heart operation and that she was having a heart failure. He said he couldn't go through the traffic." Ted Garretson, 28, a passenger who had tried to bring back Nicole's life, said the driver did nothing to help and stopped once to pick up more passengers. When the driver reached a corner where he was to make a turn, a block from the hospital, he told Mrs. Hobson to get off, she said. A transit spokesman said the driver should have made radio call to the control center for help. A pacemaker is _ . A) a musical instrument B) a machine C) an organ D) a toy car
B