Based on the information provided within the question it can be said that these are all part of the educate phase of the change management continuum model. This phase focuses on providing positive information to the customers and companies in order to gain mass adoption of a product that you are providing. This focuses on gaining positive perception, adoption, and even institutionalization.
The best and most correct answer among the choices provided by the question is the fourth choice. Sociologists study the link between depression and poor nutrition. I hope my answer has come to your help. God bless and have a nice day ahead!