Respuesta :

 Knowledge that the lives of people used to be easier and simpler
 Concern that humans lack any interest in altering their lives
 Belief in the value of studying how and why things change

Answer:

A. Knowledge that the lives of people used to be easier and simpler

B. Concern that humans lack any interest in altering their lives

done

C. Belief in the value of studying how and why things change

D. All of the above

C is the answer

Explanation:

A pex