Which of the following factors can lead to an increased insurance premium?

When evaluating factors that can lead to an increased insurance premium, a higher risk profile due to claims history is significant. This is because insurance premiums are calculated based on the likelihood of future claims. If a policyholder has a history of frequent or severe claims, insurers perceive them as a higher risk. Consequently, to cover the anticipated increased likelihood of having to pay out on claims, insurers will raise the premium.

In contrast, a decrease in the insured property value would generally lead to lower premiums, as there is less value to protect. Participation in safety training typically reflects a commitment to reducing risk, which can lead to lower premiums rather than higher ones. Additionally, increased market competition among insurers often results in lower premiums as companies compete for customers by offering better rates. Thus, the factor that leads to increased insurance premiums is clearly linked to the risk profile associated with the policyholder's past claims history.