Answer:
C.
Step-by-step explanation:
While A is still better than B and D it is not how you conduct empirical research.
B. is terrible and very prevalent in today's mass media. It will never lead us to real information and we will most likely just blindly follow some idea like a cult member.
D. Guesswork is very bad for researching a topic or something else.
A is good for critical thinking and finding what is right or wrong but still, it is not conducting empirical research.