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.
The correct answer is the Hotel (delete "tel". Needed to get past the filter) Chi Minh Trail.
The trail was a series of mountain and jungle paths that were used by the VC forces to attack American and American aligned forces.
Advantageously, the trail ran through Laos and Cambodia, making them ostensibly off limits to American forces as Laos and Cambodia were not part of the theatre of war.
It plays a huge role in the geographic pattern depending on various languages and types of people so it changes the geographic pattern up.
