Which modern market research technique was reportedly inspired by the ancient Greek Oracle of Delphi's divination methods?

In the realm where mythology meets modern market research, ancient deities had their own methods of gathering consumer insights and preferences. Before social media analytics and focus groups, mythological beings used various supernatural techniques to understand their 'followers.' This trivia challenges you to identify which famous market research method was actually inspired by an ancient mythological practice that gods used to understand mortal desires and needs.

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Focus group discussions, inspired by Apollo's council of muses who gathered mortal perspectives
Delphi method, where expert opinions are anonymously gathered and refined through multiple rounds of feedback
A/B testing, derived from the Oracle's practice of offering two possible futures to supplicants
Sentiment analysis, based on how the Oracle interpreted emotional resonance in offerings