An insurer is least likely to use reinsurance to achieve which of the following?

Reinsurance is primarily utilized by insurers to manage risk exposure, increase underwriting capacity, and stabilize financial results. When an insurer transfers a portion of its risk to another company through reinsurance, it can effectively spread out its risk and improve its financial stability. Particularly, stabilizing financial results is an important function of reinsurance, as it helps insurers mitigate fluctuations in claims and maintain a more predictable financial outcome.

While it is true that reinsurance can indirectly lead to cost reductions by reducing the likelihood of large losses, it is not primarily employed with the goal of reducing costs directly. Instead, the main motivations for seeking reinsurance involve risk management and enhancing the insurer's ability to underwrite more policies by providing additional capacity. Thus, option A, which suggests reducing costs is the least likely intent behind the use of reinsurance, aligns with the common practices and strategic goals of insurance companies.