Reinsurance involves which of the following actions?

Reinsurance is fundamentally about the transfer of policy risks among insurers. In this process, an insurance company (the ceding insurer) transfers a portion of its risk to another insurance company (the reinsurer). This is done to reduce the financial burden on the original insurer and to diversify their risk exposure. By distributing risk, insurers can also stabilize their financial position, enabling them to underwrite more policies and manage larger claims than they could handle alone.

The other choices mentioned do not align with the primary function of reinsurance. Incentives to agents, investing in policyholder assets, and estimating asset values, while related to the broader insurance landscape, do not represent the core activity of reinsurance. Thus, the choice that highlights the transfer of policy risks is the most accurate representation of what reinsurance entails.