In relation to general insurance, a risk must be which of the following to be insured?

For a risk to be insurable in general insurance, it must be fortuitous, meaning that it must be uncertain and happen by chance. Insurers seek out risks that involve randomness and unpredictability, as this allows them to effectively spread and manage the risk among a large pool of policyholders. The concept of fortuity is crucial because it differentiates between risks that are insurable and those that are not.

If a risk is fortuitous, it implies that the occurrence of the event is not guaranteed and the loss is not predetermined, allowing for effective underwriting and pricing strategies. This also ensures that the insurer's liability arises only from unforeseen and unplanned events, maintaining the sustainability of the insurance system.

In contrast, risks that are avoidable, inevitable, or unavoidable do not fit the criteria for insurability, as they can often be managed or predicted, leading to a lack of randomness that insurers require to provide coverage.