Smith had friends among merchants, scientists, and philosophers. Which of these groups do you think had the most effect on Smith's thinking?

Philosophers

Explanation:

The merchants may affect how he feels about the economy, because that's what merchants specialize in. His scientist friends may make him more knowledgeable and curious, as science is all about discovering new information. However, it is the job of a philosopher to always be questioning everything about their society and about morality. Their perspectives will likely he very unique and well-thought out. They'll probably be very open about their opinions, too, as their career is based around sharing opinions. This will influence Smith's opinions