Answer: (B) Backward induction
Explanation:
The backward induction is basically used for making the decisions and it is the process of solving the various types of problems by determining the action properly.
In any type of situation, the backward induction basically used the optimal strategy type for making some effective result of the given situation.
According to the given scenario, Elly should use the backward induction process for making the decisions more effectively regarding her shop.
Therefore, Option (B) is correct.