Which of the following must be true for a loss to be considered insurable with respect to exposure?

• A. Exposure must be small
• B. Exposure must be average
• C. Exposure must be large
• D. Exposure is irrelevant

Answer: (C)

Insurability hinges on pooling a large number of similar exposure units so losses can be predicted with accuracy. When there are many exposures—think thousands of homes, cars, or policies—the law of large numbers makes the average loss per unit more predictable. This predictability is what allows an insurer to set premiums that cover expected losses and distribute risk among a broad base, keeping the price fair and the insurer solvent. If the exposure base is small, there’s too much variability in outcomes, making it hard to estimate expected losses and to price policies properly. So, having a large exposure base is essential for a loss to be considered insurable in terms of exposure.