Which of the following statements best summarizes Social Cognitive Theory (SCT)? It theorizes that:
a. peoples' attitudes about their risk for health problems and their perceived benefits of change influence whether or not they take action.
b. multiple levels of influence interact to determine how people will behave.
c. péople's readiness for change influences whether or not they adopt healthful behavior:
d. human behavior can be explained in terms of a three-way dynamic involving personal factors, environmental influences, and behavior: