What factor could significantly affect the cost of an insurance premium?

All the listed factors—policyholder's age, type of vehicle insured, and claims history—can significantly impact the cost of an insurance premium, making the answer "all of the above" accurate.

To understand this better, consider that a policyholder’s age often correlates with driving experience and risk. Younger and less experienced drivers may be perceived as higher risks, leading to higher premiums.

The type of vehicle insured also plays a critical role; high-performance vehicles or those with higher theft rates may attract higher premiums than standard models due to perceived risks associated with damage or loss.

Claims history is another vital aspect, as a record of frequent claims typically indicates a higher likelihood of future claims. Insurers often adjust premiums based on the claims experience of the insured, leading to lower rates for those with a clean record and higher rates for those with multiple past claims.

Therefore, acknowledging that all these factors contribute distinctly to premium calculations highlights the multifaceted nature of insurance pricing.