Freud's idea of the preschool child's affection for one parent and rivalrywith the other parent

If a child's weight is in the 50th percentile this means that

50 percent of his cohorts weigh less than he does. he weighs 50 percent more than his cohorts. 50 percent of his cohorts weigh the same as he does. his cohorts weigh 50 percent more than he does.

Which of the following disorders may simply involve extreme orderliness and rigid routines with this attention to detail and

rules helping to keep activities totally under control and making the highly anxious person feel more secure? a. obsessive-compulsive disorder b. somatic symptom disorder c. agoraphobia d. conversion disorder