Which of the following is a benefit of having a health care proxy?

Having a health care proxy provides the significant benefit of allowing a designated individual to make medical decisions on your behalf when you are unable to do so yourself. This means that if you are incapacitated, the person you appointed can interpret your wishes regarding treatments, procedures, and end-of-life care according to your preferences. This can provide peace of mind, knowing that someone you trust is advocating for your medical needs in line with your values and desires.

The other options do not accurately capture the primary purpose of a health care proxy. While ensuring high-quality medical care is important, a health care proxy does not guarantee this; rather, it helps in ensuring that care is consistent with your wishes. Allocating financial resources for health care and simplifying estate tax filings involve financial planning and legal considerations, which are not directly related to the role of a health care proxy.