a. making the right decisions based on political correctness
-no, ,political correctness and ethics are two separate ideas
b. making the right choice based on popular opinion
-definitely now, sometimes the popular opition is not ethical!
c. following the right course of action
-this is good, but ethics is more the study of how to choose this course
d. the beliefs, values, and moral principles that help us to determine right and wrong
- this is the correct answer! this is exactly what ethics is