Excerpt from Robots Carole Jenkins (1)A robot is a machine that is able to perform a variety of tasks through the use of a computer. (2)This computer is programmed to control movements of the robot's legs, arms, and other appendages by calculations of the various angles through which the robot's joints move. (3)Robots are made ideal for assembly line factory work by these repetitive movements. (4)Some robots are able to handle small parts that fit into small places. (5)Other robots are able to operate tools such as paint sprayers.1 What does the proofreading symbol in red mean? A) add a space B) delete a word C) insert a word D) transpose words