Over the past three decades, many nurses have expressed a concern about the lack of theory ...

Over the past three decades, many nurses have expressed a concern about the lack of theory development in community health nursing. Why is this such a significant concern?
a.   Because nursing theories were originally developed to focus on population health
b.   Because it is difficult to adapt theories that were developed to focus on individual illness to the community settings where health promotion is the focus
c.   Because nursing theories often depict community problems as isolated events rather than as representative of a pattern of illnesses seen at the family level
d.   Because primary care nursing needs to focus more on social justice, health equity, and advocacy