What is one difference between sociology and simple reading about a group of people?

Sociology examines the social behavior of people in GROUPS while economics examines the monetary aspects of society and how they influence other people

Explanation:

the last statement is correct i.e.

when your heart is not pumping enough blood around your body because your heart is severely failing, you may need an artificial heart. an artificial heart is a mechanical device, about the size of an orange, that is connected to your heart or implanted in your chest to or replace a failing heart.

answer; i believe that the correct answer is (b) is a factor associated with physical activity and heart disease;