What organization is responsible for developing and filing rates and policy forms for insurance companies?

The Insurance Services Office (ISO) plays a crucial role in the property and casualty insurance industry by developing and filing rates and policy forms for insurance companies. This organization provides standardized policy language and endorsement forms, which help ensure consistency across the industry. ISO collects and evaluates data from various insurers to determine appropriate rates based on risk assessment and trends in claims.

By having a central organization responsible for these tasks, ISO helps insurers streamline their operations and adhere to regulatory requirements, ultimately making the insurance market more efficient and accessible to consumers. This level of standardization also aids in maintaining competitive pricing among insurers, as they rely on ISO's data to guide their own rate-setting processes.

The other options are either not involved in the rate-making processes or do not exist with the same level of authority as ISO. For instance, while the Insurance Services Organization might seem relevant, it is not as recognized as ISO, which is specifically granted the authority to perform these functions effectively in the industry.