Answer:
A) dependence
Step-by-step explanation:
Power and dependency are fundamental issues in supply chain management. When a firm has more potential suppliers, the bargaining power of the firm increases (due to greater competition). But if a firm has a small number of potential suppliers, then the bargaining power of the firm decreases.
In this case, Levin and Co. had no bargaining power over its supplier because it was totally dependent on it, it didn't have any alternative suppliers.