Identify the correct and incorrect explanations for why the study of brief, minor one-on-one social interactions is one of the most absorbing of all areas of sociological investigation.

a) Correct: They reveal underlying social structures and power dynamics.
b) Incorrect: They are too trivial to yield meaningful insights.
c) Correct: They shed light on how individuals negotiate social norms.
d) Incorrect: They are easy to generalize to larger societal trends.