Answer:
The answer is: B.) XYZ's product is a close substitute for the locally available goods.
Step-by-step explanation:
A substitute product can be defined as a good a consumer perceives as similar or comparable to another good (e.g. cow and chicken meat). Generally speaking, when the price of one of these goods increases, the demand for its substitute good increases.
In this case, Darren believes that since XYZ´s product is cheaper it should sell better than its competition (close substitute goods).