1. Daniel's answer seemed bourgeois despotic dubious prone to Tara because she was sure that salt dissolved in water and not the other way around.

The correct answer would be duboius. It means that something is doubtful, or it cannot be relied on. From the thought of the sentence, Tara was not so sure of Daniel's answer so she should be hesitating or doubtful. It is the only word that fits the sentence.