When researching a topic, what should you do if you come across a past writer or speaker who has expressed an opinion that is more authoritative, comprehensive, or memorable than what you can say?

Options:
a. Ignore their opinion and continue with your own research
b. Discredit their opinion and focus on finding supporting evidence for your own viewpoint
c. Acknowledge their authority and incorporate their perspective into your own argument
d. Dismiss their opinion and rely solely on your own expertise