Following are the points which explain the statement:
a. The economic activities have become specialized and complicated and has resulted in a new group of activities, like the Quaternary activities.
b. The Quaternary activities are related to knowledge and education, information, research and development.
c. The people of the Quaternary activities are innovative and contribute to the research and development.
d. Only a few people are engaged in Quaternary activities in economically developed countries.
e. It is characterized by the highest income and higher degree of mobility in the process of career development.
