Final answer:
Person E, who is working 20 hours/week and seeking full-time employment, is considered officially unemployed.
Step-by-step explanation:
The individual who is considered officially unemployed is person E - someone who is working 20 hours/week and actively seeking full-time employment. According to the U.S. Bureau of the Census, to be classified as unemployed, a person must be without a job, currently available to work, and actively looking for work in the previous four weeks. The person who is working 20 hours/week and seeking full-time employment fits this classification as they are actively looking for work.
correct option C) Person who left a job to look for a different job