In the context of risk response, which of the following options is NOT a valid approach?

The approach identified as not valid in the context of risk response is expanding. In risk management, the recognized strategies typically include avoiding, accepting, and sharing risks.

Avoiding entails altering plans to sidestep potential risks entirely, while accepting means acknowledging the risk and deciding to proceed without any active response. Sharing involves distributing the risk across other parties, such as through insurance or partnerships, to mitigate the impact on any single entity.

On the other hand, "expanding" is not a standard risk response strategy. In risk management, the focus is on reducing, transferring, accepting, or avoiding risks rather than expanding them. Therefore, this term does not fit within the conventional framework used to categorize responses to risk, making it the option that is not valid in this context.