The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A mother and her 4 year old son are seated alone in a reception area with the child staring off into space, rocking and constantly twisting a strand of hair about his fingers. Upon entry of another person, the child begins to beat his fist against the side of his face and behaves as though he does not hear his mother speaking to him. This behavior is most characteristic of:   (A) An autistic child   (B) A mentally retarded child   (C) First dental appointment anxieties of a 4 year old child   (D) A child with a chronic seizure disorder
['(A) An autistic child <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) An autistic child \n (B) A mentally retarded child \n (C) First dental appointment anxieties of a 4 year old child \n (D) A child with a chronic seizure disorder <> possible answers', '  A mother and her 4 year old son are seated alone in\na reception area with the child staring off into space,\nrocking and constantly twisting a strand of hair about\nhis fingers. Upon entry of another person, the child\nbegins to beat his fist against the side of his face and\nbehaves as though he does not hear his mother speaking\nto him. This behavior is most characteristic of: <> context@']