Interaction jobs are those jobs which: are in the service sector and require close coordination and collaboration. involve knowledge that can't be put into an information system. are performed typically by operational-level employees. require intense levels of interaction with clients.

These jobs are service sector that includes close coordination and collaboration  

Explanation:

As indicated by the name there are three types of jobs that are categorized work and workers transformation, interaction and transactional.  

Interaction jobs include the managers, salesperson, teacher, doctors, customer care executives and the skilled professional who needs a lot of time in interacting with people. Their job depends on interaction with people. The interaction could occur with other people such as employees, suppliers customers that conclude the judgment based on their knowledge, skills, and experience.

well considering i can't see the graph, it's probably prices