Final answer:
Board members being linked to more than one company is an example of interlocking directorate.
Step-by-step explanation:
The correct answer to the question is c. interlocking directorate.
An interlocking directorate occurs when a board member serves on the board of directors of multiple companies. This can create a conflict of interest as the board member may prioritize the interests of one company over another. It can also provide opportunities for collusion or unfair practices. Interlocking directorates are regulated to prevent monopolistic behavior and ensure fair competition.