Whitney decided to do an undergraduate research project on the bystander effect after learning about the phenomenon in her social psychology course. this represents which source of research ideas?

This represents the source of research ideas called classroom lecture.
There are several sources which can inspire and help someone to develop a research question. Some of them are theory, everyday occurrence, serendipity and past research. In this case, Whitney was taught about the bystander effect in her social psychology course and she was inspired to undertake an undergraduate research project on this subject. 
 

What area are in blue