"publicity": 1. is generally less effective than advertising for promoting a really new product. 2. is mass selling that avoids paying media costs. 3. is any paid form of nonpersonal presentation of ideas, goods, or services by an identified sponsor. 4. is more expensive than all other promotion methods. 5. both a and b are true.

Publicity is mass selling that avoids paying media costs. Publicity is attention give to something or someone from the media. The media will advertise things that are going on, positive or negative, for ratings. When they do this, they are driving attention towards a topic that wasn't asking or paying to have their information on air. Publicity serves as mass selling and advertising that is free to the person or organization gaining it. 

Answerstructural and frictional unemployment;