You are walking past a chemistry lab and are startled to see a lot of smoke coming from behind a lab station. You look around and see that people in the lab have also noticed the smoke, but they seem unconcerned by it. You therefore conclude that nothing is wrong, and you need not worry about the smoke. This is an example of: __________

a. informational social influence
b. normative social influence
c. obedience
d. compliance
e. diffusion of responsibility