Answer:
This question lacks answers, here they are:
a. Go with his gut feeling
b. Accept that Amy knows more about the topic than he does
c. Keep looking for more evidence
d. Dismiss Amy's argument because she is trying to sell something
The answer is c.
Explanation:
In this kind of argument-fueled debate, it is essential to constantly have arguments up to your sleeve.
In this example, Amy has a robust base for her point of view (the literature). Since Noah acknowledged that, he has to provide his own argument basis (evidence). Otherwise, stating his point of view without it cannot be taken seriously in this kind of conversation.
With every side delivering a new amount of arguments, the other side should have appropriate arguments to defend a particular point of view, as it both feeds the debate and protects one's image at industry events like conventions, meetups...
The outcome of the argument-intensive debate is always a strong opinion, reflecting the pluses and minuses of the topic at hand.